Really interesting idea and a great execution of that idea. I'm loving the audio design this Jam, and this is especially top notch!
I think this could do really well as a full release.
If you do go for a full release, I think some very lenient coyote time could take the pressure off the trickier jumps. Also some way to compare against other players like a histogram for how much fuel you used verses the average would be really neat.
Great Job!