I added 2 signs on the spawn that explain some things on the map: Now there is a springboard at the end of the road, not just a cliff, although it is still quite uneven: I tried to improve the smoothness of the road, but I made some parts rougher in the process...
So I made this map, which is basically an enlarged and (hopefully) better version of the original Cliff map. I have several roads that lead to a jump where you can make your car fly into 1 of 3 garbage cans, as you can see in the screenshot. I have some numbers above them that tell you how many points each one gives you.