Why not just use Turo? You can rent a car for like $20/day and find one that is within walking/public transit of where you live/work.
Also, if you use a referral link (like this one:
https://turo.com/en-us/c/dougd), you get $25 off the first rental, which basically gets you the first rental free if you are renting a cheap car.
As a car nerd myself, I also like that you can get more interesting vehicles for the same price as boring economy cars from a normal rental company.