Nearly 8 years ago, I did an artwork of a Freighliner FLA-FLB Cabover and made it into an Optimus Prime G1 version from the 1984 Cartoon I know that many say he could be a Peterbilt or Kenworth COE probably because some of the makers behind the Animation department used Random American Cabovers to create the character's Earth mode Form.
The original Diaclone toy transforms into a White Freightliner WFT-8664T cabover semi-trailer truck (I don’t know the exact year model other than it’s before the square headlights & it might be a day cab).
The original Diaclone toy transforms into a White Freightliner WFT-8664T cabover semi-trailer truck