Low resolution, 440 in/s (25mph)..... More information in a few hours, or tomorrow
Lets just say, the project has been on the back burner for awhile and I think I've had the idea breakthrough I've been waiting for.
Screenshot around the 45th iteration...
EDIT
Yes, it's a terrible model... Some other day, I'll add spinning wheels and a moving road
Maybe even some cavities for the flow to move through.