Toys R Us description:
Hot Wheels® fans can take their races to new heights with the first track set that leaves the floor and sticks directly to walls using 3M Command¿ strips, which can be easily removed without leaving residue. Powered by gravity and customizable for unique track creations, the starter set comes with one car and eight pieces of track, including a loop that can launch cars at enhanced speeds. After assembling their first track, children can easily combine the Starter Set with any Wall Tracks¿ or Hot Wheels® track set, allowing for expansion to all four walls, the floor and beyond! No batteries required. Ages 4 years and up.