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.