With this mod, the Infernus will go over 9,999 km/h. It is also extremely heavy so any cars that get is your way will be halfway across the city when you crash into them. The Infernus will not flip in water if you have the SEAWAYS cheat on. No matter what you do, it manages to flip it self back over in water.
Version 1.2 fixes the tank glitch from 1.1.