And most important: COWS!!! :o
We will keep demanding cows 
he should make cows an unlockable feature, so that people are just forced to play the game 
OK, give me an ideas of how cows could make the game more fun (not stupid!) to play.
Good idea. I was already planning to add cars to unlock, so that might go for this as well.
I already have a school bus as a “stupid” vehicle, so adding a tractor or similar won’t add much. I plan to add online highscore, when the game is tuned a bit, so tractor and tank won’t be useful for getting good times
Dune buggy could be a good addition. I need to add specific drag/friction for different vehicles in sand to make buggies more favorable.
hover craft 