This article is from the The Monster Truck FAQ, by Jeff Hawkins with numerous contributions by others.
A. In most of the new fiberglass body trucks, there is a hatch in the
floor for the drivers to climb up through.
On a older truck, the driver would open the door, grab hold of the
seat and door, push off the front tire and pull himself into the
truck. The hatch is definitely easier.
 
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