Big Trak And Transport Toy from the 70s! We tested this; the Big Trak works for sure (we might have had a big more fun with testing it than absolutely necessary) but we couldn’t get the Transport (trailer) to dump. The trailer also has a break in it on the connector arm, but the wire is still intact. It’s a bit dusty in the crevices where I couldn’t fit a rag in to clean it out. It is also missing the cover that goes over the 9V battery on top.