I have two 1/24 cars and about 100 HO cars. Plus my buddies dad gave me this set of HO Trucks that do all kinds of stuff. Like unload pipe,roll logs,dump sand,unload cars,etc. The lanes go in the opposite directions and you can reverse! He went around to all the Toys-r-Us and bought all the track and excesories. I set it up once and it took ALL the floor in my front room.