Ramps and jumps were in the playtest beta version, but they got removed during editing, sacrified to the tyrannical word counter.
Here's those rules, presented without warrentee! :D
Agree which terrain items count as RAMPS with your opponents before the game. If a vehicle is moving in GEAR 3 or higher, and their movement template or final position overlaps the business-end of the RAMP then they must JUMP.
JUMP: The vehicle stops at the edge of the RAMP and then makes a free additional LONG STRAIGHT move forward, during which it ignores all terrain and other vehicles.
The jumping vehicle may not make a SKID CHECK during this activation, may not remove any HAZARD TOKENS during this activation and receives +2 HAZARD TOKENS at the end of this activation.
If a vehicle WIPES OUT during this activation, it automatically fails its ROLL CHECK.
1 Audience Vote: Ignore the hazard tokens gained from the JUMP.