K'NEX Nintendo Wii Mario Kart Set in Toy's R Us

As usual, I brought my kids to Toy's R Us over the weekend and saw their new display for Wii's Mario Kart.

It is actually made by K'Nex, a construction toy maker similar to Lego's blocks.
The idea is that the kids can make their own track sets and run their own Mario Kart races.

K'NEX Mario Kart Wii Track Toy's R Us

I can see kids would love this set because I like Mario things myself.
(I grew up with it, too.  First generation Mario player.)
However, I can just see smaller kids wrecking this track sets and the parents have to fix it.

We have experiences with other sets like Thomas the Tank Engine.