GPL v3

Letting you use the steering wheel and gas pedal is clearly a much larger way in which car makers give you the possibility to screw up. They also give you the possibility to neglect safety-critical maintenance. Anyway, when 4 people are actually killed in a car, the make of the vehicle doesn't necessarily show up in the story, let alone the headline; it's unfortunately far too common an occurrence. People collecting safety statistics are much more likely to take after-market modifications into account; and this sort of aggregate statistic is unlikely to really be affected by anything an IVI system could do, anyway.