Possum Brown

Yep, even truckers wear yellow hardhats.

Possum Brown is a human character in the Generation 1 continuity.

A trucker by trade, Possum Brown drove a Kenworth K100 Aerodyne tractor trailer, until it was stolen by Rumble and rebuilt into the Stunticon leader, Motormaster.

From Teletraan I: The Transformers Wiki, a Wikia wiki.