To start press right arrow. Left arrow is Reverse. To stop press Brake and stop touching any keys. Up arrow makes it "look like its popping a wheelie."
Engine noise updated but still working on it. Who helped me was: Caterpillar_F450 Next is making a longer drag area and sled/distance control and gauges such as temp Rpm and speed. And working on the Engine blowing when the gauge is in the red.