Algodoo

Not so fast as the others, but very powerful ! I fixed a box of 500'000 kg to the car to demostrate how powerful it is (you can erase it if you want). It uses a different kind of engine wich isn't faster, but I'm planning to create a 3.2 version with gears: this one in fact hasn't got gears. To break and to stop breaking press down and it will start.
Maximum speed without cargo: over 130 meters per second.
Maximum speed with cargo: over 30 meters per second (after a little bit of time).

PS: sorry if it's too big