I'm going to leave a note on someone's car apologizing for hitting their car when I haven't actually hit their car.
Why would you implicate yourself like that even though you didn't hit their car?
I've never felt guilty before in my life, and it seems like fun.
Leaving a false note for the rush of you feeling guilty is a waste of the owner's time. They will really think you did it and waste time on you while the real perpetrator gets away scot free.
I don't know why this person would have to waste time on me.
They'd be wasting time because you'd be distracting them from finding the person who actually hit the car. I don't think you should bother with someone's car. You should find something else to occupy your time.