1. It's more than most, it's almost all modern passenger cars that are drive-by-wire. But drive-by-wire is a term of art that specifically means that the thrott

1. It's more than most, it's almost all modern passenger cars that are drive-by-wire. But drive-by-wire is a term of art that specifically means that the throttle is not a direct mechanical linkage. Very, very few cars are steer-by-wire and even fewer are brake-by-wire. 2. You're using "proprietary" as a pejorative. It's not proprietary, compiled code that has bugs. All software is guaranteed to have bugs. 3. An entirely insignificant number of accidents are caused by bugs in the drive-by-wire control system. (Even taking into account that an insignificant fraction of cars on the road are drive-by-wire as you mean it.)