It looks cool and I like the twisted layout. The colors I think can change to a blue since that seems to work well with the parking lot IMO. Also, I think you should space out the parking spots a bit more or leave some areas just road so it doesn't look so repetitive.
It's themed to midget motorcycle riders, no need to space any further. And roads, heh, I'm just a bit too lazy for that. And there's going to be an entire park on there.
Someone else made a ride like this awhile ago, it was even floorless too. The name escapes me, but they had a pretty good texture and you might want to hunt around for it.
Elements are fine. People just cant accept seeing an element that isnt perfectly stock B&M. They look heartlined properly and the leads look good as well.