If you build it, they will come.
Unfortunately, they come a lot sooner than you want them to and you have to box them out to finish your super-awesome-track before they wreck it. And not only do you need to finish it, you've got to document it too, because you know, you're a photographer.
This is why I don't build anymore! I think I need to have play time to build at night after they've gone to bed and taken their Powers of Destruction with them.
But I did get to finish this fun track, and I was so smitten with it that I made them cool it on the couch so I could take a picture of the thing.
To mommies and daddies everywhere who love building and playing as much as their kids (and consequently forget to model sharing with them), this one's for you...