Every new car on the road today contains hundreds of millions of lines of code, and that’s a good thing because the technological functions they enable add greatly to the car’s ultimate value. For over 100 years, automotive consumers coveted cars because of their paintwork, their leather interiors and the speeds they can travel. But now, their real and perceived value is influenced by technology features. Technologies such as electric vehicles, self-driving and other software-defined services are what drive the value of the car—and it’s no longer too nerdy to describe cars as ‘software-defined.’
Navigating the Road to the Future
For car manufacturers and their suppliers, the challenges of the software-defined car are already very much in focus. Original equipment manufacturers (OEMs) have been hiring new workers and re-training existing ones to navigate these challenges, such as cybersecurity and connected technologies. Ten years ago, OEMs such as Renault and Volkswagen had few in-house software engineers. Fast forward to today, and both companies have numerous resources focusing on software.
Software will soon become ever more central to the vehicles we drive, and that will soon drive us, as vehicles become more connected, autonomous, shared and electric (CASE). In the next few years, autonomous vehicles will soon be handling tens of terabytes of data per day, gathered by sensors such as LIDAR and cameras. Customers are increasingly expecting smartphone-esque features, which involves keeping pace with the very latest apps and technologies.
Combined with features such as passenger entertainment systems and remote diagnostics, the requirement for software and processing power in vehicles is going to grow at an ever-increasing pace. Open-source software can provide automakers with the power to keep up.
You Must Shift Gears
Inevitably, these processing power requirements will require a seismic shift in the way OEMs work. Currently, OEMs are struggling to maintain existing systems‒while at the same time attempting to develop new platforms. It’s a hangover from years in which vehicles were not connected or had extremely basic connected services. This has led to a situation where it’s difficult to upgrade the software at pace due to the requirements and constraints of the hardware.
There are lessons for car-makers in the smartphone world. Think about how a software update can be applied across multiple different smartphones. An iOS update works just as well across a new device or a device from four years ago. One iPhone will see multiple updates, adding new features and boosting security.
For car manufacturers, this won’t be an easy shift: The industry needs more defined standards to allow an easier interface between hardware and software. The industry also needs to reconsider how it develops hardware and how this relates to software. These challenges will require a new way of thinking for car manufacturers as they transition to a world where time cycles are critical. I believe that cross-industry collaboration is needed to accelerate the development of autonomous vehicles.
Keep an Eye on Moving Parts
Complexity is building at an increasingly rapid pace in the car industry, and this shows no sign of slowing down. In a report on the industry, McKinsey noted that the average complexity of individual software projects in the automotive sector has grown by 300% over the last decade. By 2025, the number of lines of code in the average luxury car will have doubled from today’s figure of 100 million lines of code, according to a prediction by Volkswagen‒which is already more than a military aircraft like the F-35. In full-self-driving cars, the figure could potentially reach a billion lines of code, analysts believe.
It’s not just the software that is becoming more complex, the hardware is too. Modern vehicles already have up to 150 Electronic Control Units (ECUs), often scattered through the vehicle, close to sensors. Increasingly, manufacturers are moving towards a model where these ECUs are combined and consolidated, connected by an ethernet network. As the amount of data vehicles deal with increases, it’s unlikely that all of this will be directly uploaded to cloud servers; instead, much of it will be processed inside the vehicle before ‘edited highlights’ are uploaded to the cloud for processing.
This has important implications for vehicle maintenance and also poses cost issues. Car manufacturers face challenges when it comes to managing the ever-growing complexity of their systems while trying to keep annual recurring costs down.
Watch the Hacker Threat
The need for cybersecure vehicles is also growing, particularly as we see self-driving vehicles enter the fray. In 2015, two security experts showed off a hack where they were able to ‘switch off’ a Jeep driving at 70mph down an American highway. It marked the dawn of the ‘hackable’ car—although the seeds of this were sown decades earlier when the first ‘connected’ components were unveiled in the 80s and were not built to be resilient to hackers. A 2021 report on global automotive security was damning, saying, “There have been 110 Common Vulnerabilities and Exposures (CVEs) that year related to the automotive industry, 33 in 2020 alone compared to 24 in 2019.”
Ultimately, the automotive industry faces increasing regulation in the face of these threats. As governments begin to regulate software within the automotive industry, those designing the products and software will become more accountable.
Open Source and Safety … Always
For car manufacturers, there are also important issues related to functional safety—unsurprising when you are dealing with a device that weighs a ton or more. This directly impacts software development, with additional costs for any system that has an impact on driver or passenger safety.
Car manufacturers need to learn from the aviation industry, where systems related to safety are rigidly separated from those that are not, reducing costs due to compliance.
It’s often difficult to reuse existing software in cars today, as it can require porting to a different configuration. Costs can rise, not in a linear fashion, but exponentially. How much money will it cost to write, implement and test 100 million lines of code ‒ or a billion? This is the challenge manufacturers are facing. When it comes to managing these costs, open source will become ever more important and not only will allow the reuse of existing software, but will enable other manufacturers to contribute to said software.
Software-Defined Cars
The future is rushing towards us at speed—and in it, cars are increasingly software-defined. In this future, open source offers OEMs a highly attractive solution to the considerable hurdles ahead, from safety issues to cybersecurity. Open source will unleash the power of the ambitions of the car industry—not just to compete with the tireless innovation of other industries, such as mobile, but to exceed it. For consumers, cars are already the most complex devices they own: and they could be the most innovative. The flexibility and scalability of open source will allow car-makers to free their imagination and create the innovative, software-driven car of the future.
