Or in our case Amazon box car garage, ha!
There is no tutorial but there are a lot of pictures in case you want to try to make one too.
Warning we used a TON of hot glue!
The boys were bored so we (mostly I) made a car garage for their hot wheels.
There is even a parking lot made out of tape although it didn't last long before they had peeled the tape off.
Ramps and tunnels included they loved it and have actually been playing with it for 2 months (yeah I'm behind, oh well!)
Here they are playing with it or fighting I can't remember ;o)