system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Cost aside, how efficient would a vibranium car be?

What if all the metal in a normal car was made of Vibranium instead? How would it handle collisions? What about performance compared to a normal car of the same make and model?
gpt
Well, you could have an extremely lightweight chassis (maybe even 1 mm thick), but to be honest covering the outside would be a complete waste, unless safety is your main concern. Yes, in a collision the energy would somehow be transferred away from you and into the vibranium, with minimal damage to the car, but even so the momentum from suddenly coming to a stop would still hit you, so you could still need air bags and other safety devices.

Unfortunately, the energy absorption properties of vibranium make using it in the engine a non-starter, as the pistons need to be able to release the stored energy, which vibranium cannot do, so it would have a totally normal engine. However, you could just put vibranium on the disk brakes, but you would still be limited by the rubber wheels wearing out. 

tl;dr: Would be very safe if put around chassis, very wasteful though, you would be better off using vibranium disk brakes. Would be useless in increasing the efficiency of the engine.