Absolutely adored this. I agree the initial few goes are a bit too difficult but I managed to escape after my third attempt. It's possible to turn the rover in the air, as well as drifting so there's basically no punishment to jumping. It would be nice if the car would rotate while in the air but couldn't accelerate forward, if that makes sense.
Other than those above points, this was flawless for a jam game. The intro was informative and cool without being too wordy or complicated. The balance and timing for getting batteries and spending them on upgrades was brilliant too. All in all a REAL solid result. Great work!