Unofficial contest: cross the hill

This is very similar to cross the gap but more harder than it.
You have to make a vehicle to cross the hill

RULES:
1. Wheel must not larger than high of hill
2. No rocket, thruster, fan and emitters
3. No teleporting
4. Don't edit this level according to you just make a vehicle
5. Must be a VEHICLE
6. No throwing allowed
7. Must be a derivative of this level
8. Must allow derivatives

(Here's my "entry", it doesn't even work and it's entered in a long closed contest, but here it is!)

It's hard I know but it is the challenge for you!
Last date: 15/06/2015