If all "normal" people used car sharing services or taxis, then a lot of roads could have 1 more lane (where parking normally occurs), which would increase the throughput of the streets.
All the peak hour traffic circling around their destination struggling to find a parking spot would also disappear.
This would reduce the overall traffic noticeably, and everyone would get to their destination quicker and with less stress.
The problem with this is that so many people obbsess over vehicle ownership, that probably banning car ownership (with reasonable exceptions like modified cars for accomodating disabilities, oldtimers, cars with baby seats installed, etc..) in cities would be required to make this happen.
Speaking from an experience living in a big city, where I owned a car, but transitioned to using car sharing, even for long trips around the country.
I guess what I'm trying to say is that there's still plenty of room for innovation in the non-owned car market.
That means I can rent that car for ~5 month and still come out ahead.
The smallest golf on the list is 579 EUR/Month, that’s 6.948 EUR per year. Renting a Golf at starcar costs 1436 EUR for the month of August. That’s 4.84, just shy of 5.
Reality is even worse than your imagination.
https://encrypted.google.com/search?q=cars+are+parked+*+of+t...
Again, the cars are the reason it was made to be infeasible. Cars damaged our cities.