I saw these at a trade show recently, and they seemed like they would make nice inexpensive additions to our line of nostalgic toys. Powered by a traditional clockwork motor, and constructed of lithographed tin. Sure, they're not in the same league as the old Marx, Chein, or Marklin tinplate, but for an inexpensive nostalgia trip, these are hard to beat! Measures approx 6" long, 5 1/2" tall (overall), and  3 1/4" wide at the treads.