Prevention in the car analogy would be like adding a breathalyzer and not allowing it to start if the person in the driver's seat fails.

It's been a gimmick idea for decades but I'm not aware of any car that actually comes with that as a feature. Kinda think there's a reason with how much friction it would add - I just did a quick search to double check and found there are add-ons for this, but without even searching for it most of the results were how to bypass them.