There is a step just before the jump platform and the vehicle will hit it.

Hey, you have to click 'Spawn Paths' then save & reload to see the road. You can then select the path in the Paths tool and click 'Apply Terrain Modifiers'. 

I will extend those wooden ramps down a bit further though, so it will still work without having to spawn the road! Thanks for highlighting this

Changed Status from Pending to Fixed

Changed Fixed In to 1.0.4