Insanity is a gamepass on Roblox's popular game, Vehicle Simulator.
The gamepass was rarely ever used because of it being overpriced. It's price, 666, also was a reference to the Devil.
Purchase this and you'll be able to toggle a mode that is literally insane. This gives your current vehicle insane amounts of torque and doubles your current max speed, you'll also be able to climb walls! Once purchased go to the Insanity application. Insanity can not be used in races.