TaxiUbber Rally Free

TaxiUbber Rally is an awesome top view 2D race game with 12 cars. One car is controlled by the player and the other 11 cars by CPU. Cars controlled by the computer can be Taxis and also that other service with black cars. What is the name of that service? Let's call it "Ubbers". Taxis and "Ubbers" compete with the player on 10 GPs for the championship.