You don't even need to cause any damage or even leave a fingerprint and they get so angry. Its kinda funny.

I see so much road rage, but usually from extended family so I try not to start an argument that will lead to someone storming off in a strop. I find it funny that an adult can get so angry, but it upsets my partner.

I often walk or cycle past a school and a daycare, and here they have recently "upgraded roads" which means that they have scraped away a few pedestrian crossings. I 100% do shitty tricks to cars driving too fast or not giving enough space, especially if I am moving around the time kids are active. (Around here kids are still allowed to walk/cycle from school and often play around the town.)

I have made air kicks, always do when necessary, but sadly so far they have missed..

Deciding what is good for random strangers and then forcing them to enjoy whatever it is you came up with doesn't sound like very good idea.

And how is this helping your situation? Breaking and accelerating increases noise and pollution. If cars have to spend more time on the street instead of being at their destination, they either need more road space or they spend more time in traffic jams that, again, increase noise and pollution. Cars are the least likely to be involved in accidents when they are cruising, so you are also making your city less safe.

Just to be clear: I'm absolutely in favour of banning cars in cities, but you are making the already bad situation worse for everyone.