> cars don't need start buttons, physical keys

What would you rather have?

If you like to show your car off once a month to friends, then sure.

But practically,

> start buttons

What is a difference from switch on button on laptop? How do you tell the car, that you are ready to drive?

> physical keys

So when your phone will not be working, are you walking home? I like physical keys because it does not create dependency on single artifact and thus single point of failure.

Agree on first two, but vents on my Tesla kinda blow. Too weak where it needs to work (my face) and too strong where it shouldn't (stray wind on my knees).