Well, I gave it the ol' college try at least.
After playing multiple times I finally understand how all of the mechanics and items work and affect gameplay. Mostly if a bit of the UX (different colors seems to mean nothing, only shapes, etc) and some of the rules were both tweaked then I think it would be much more fun.
Also I think there is something weird with slowing down and speeding up. I get that when you get more power storage from the items you go faster but once you slow down sometimes nothing seems to speed you up again. Also, there seems to be a fine balance between how much storage you hold and can deposit in city power without losing.
Overall pretty great idea, just the implementation is a bit lacking. Congrats on the game and submitting it too though! Nice implementation of the leaderboard :)