Lol I was bored today and decided I'd try to make it down the mountain coasting only using my clutch as a brake. It's fun as hell! Try it and see, just keep the clutch in and rev your engine to get rolling then put it in 3rd and release the clutch if you need to slow down. It's actually kind of challenging to make it the whole way without hitting anything. Now trying to make it down without using the clutch is probably impossible