Software flaws in cars usually aren't fatal. If your car has a failure, you just pull over on the side of the road. You can't do that in an airplane. Many mode

Software flaws in cars usually aren't fatal. If your car has a failure, you just pull over on the side of the road. You can't do that in an airplane. Many modern cars have computer control of brakes, accelerator and even steering, so a software flaw could stop you in the opposing lane just as you start to pass a car, or accelerate and steer you into a bridge pillar (and since that car was already steering the car before that, the driver may not be able to react in time)