Yeah, the very slow bike thing kinda bugged me too, but I didn't want to make the whole game go faster as it would be too fast to place to blocks. Never thought about speeding up background just to get more urgent feel, bloody amasing idea!
Boom, I've fixed block rotation issue that bugged the hell out of me, but I've made background trees faster and bike animation loop quicker. I think it has made big difference to add urgency, does it feel any better now?