Might I suggest that you make the "Rebirth countdown timer" centered in the progress bar at all times? it does not really make sense to have it follow the bar as it moves from the right to the left ;)
I think I broke the game after one day of playing, had it running and when I came home from work I started upgrading everything.
Now it looks like this http://puu.sh/q73FE/892ada1036.jpg
I can't collect any coins at all since it says out of fuel the very first time I Press "W" so i cant get any distance at all, the fuelmeter drops to the bottom at the push of the button, hope this is of any help
Seems like that bug affected all players. Should be fixed now.