IMO Cars are designed to be safe. Many millions have been spent in crash tests and safety devices.
Planes are designed to be light and to make money for the airline. The only safety feature is heavy maintenance to be sure they never crash.
Once a plane is assuredly headed for a crash the plan is for the passenger to lean forward and put his head between his legs, While there you can kiss you butt goodbye.
I know, lol!
A plan not considered an option with time when one is traveling on the ground...