reducing fear when cycling?

Small easily hidden handguns tho

For many, many months, I've been thinking "I wonder if I could maybe begin a campaign of destroying cars. Not so anybody gets hurt, and not so they blow up in the streets, but some small act of sabotage that renders the vehicle useless and that would be prohibitively expensive to fix. I could do this to cars that are driven by either dangerous maniacs or oblivious clowns, and by doing so, make the roads gradually safer for everyone"

Luckily I know nothing about cars so wouldn't be able to put this into practice, and I'm too slow to chase down any of the drivers I would like to dispense this kind of justice to, but fuck me that little voice is a tempting one to listen to.