INSANE Snowmobile Dam Jump
Have you ever skipped a pebble over the surface of a lake?
Now, imagine that pebble had a little engine that could maintain it's momentum.
How that works... Well, hydroplaning. The same way airplanes can fly through the air.
The the upward force from the pressure on the underside of your pebble (or in this case, snowmobile) is greater than the force of gravity pulling it down. As such it gains lift.