Who said anything about hills? Didn't see any mention of hills, lol. The term "urban snowboarding" doesn't really make me think of hills at all... You slid down stairs, you say? The rails beside the stairs are much more fun.
Getting pulled behind trucks is no good unless you have an old s*** board to thrash up. I broke my s*** board in half hitting a rainbow a few years ago, and I would def not want to take my current board on pavement. Regardless of how much snow is on the ground. And its not even that nice/expensive of a board... Not tryin to buy a new one.
Lunch trays are for getting pulled behind trucks.