Rush Hour is a contemporary sliding piece puzzle. It was first offered for sale in the United States in 1996, but was sold prior to that in Japan as Tokyo Parking and made by Toyo Glass. The objective is to move cars and trucks back and forth to allow the red car to get out of the parking lot through the exit on the right side of the board. It comes with forty cards giving various setups ranging in difficulty from very easy to diabolical.
The variety of these puzzles is vast. In 1986, L. Edward Hordern, a British puzzle collector produced a 249 page book titled Sliding Piece Puzzles (what else?) with an analysis of 250 sliding piece puzzles from his collection.