Absolutely - that was the biggest attraction - building the track. The stackers went up to 3 stories, so you could build real under and overpasses. We'd add cardboard boxes for tunnels.

There were also custom lane changes. There were certain straight sections that had the groves cross in an X, and would make the car flip to the other lane. Of course, if you hit that section with both cars racing neck and neck, you'd get amazing crashes, sometimes hard enough to snap the plastic top cover off the car.

That was another fun thing - racing with top off. The tops of the cars came off with a snap, and we'd often pretend we were doing crash derby with the stripped down cars smashing into each other. You could actually see the electric motor spin, and put your finger on it while it ran... although you ran a risk of getting pinched and losing some skin.