The Dump Truck

It still exists and is still used. Very seldom, but enough!
Ever since the running started, walking slowly behind something is not as fun.
The steering wheel does pull out to serve as sort of a wagon. He has put toys in the bed of the truck and dragged it, but only a couple times. Hopefully after the novelty of being bipedal wears off, doing stuff in that position will become the new fad!