I can still vaguely remember--when I was 4 or 5...riding in two different model A Fords--one a small flatbed pickup and the other an AA dump truck. The AA I expecially remember--the floorboards were partly missing, and you could see sparks from a leaky exhaust, and the ground going by. One of them had an aftermarket hot air heater---a trumpet shaped deal around the exhaust that directed "warm" air into the cab.
