Optimus' semi-truck form is also based on a real truck, but only eagle-eyed fans have been able to determine exactly which one. The original "Transformers" Optimus Prime toy was released in 1984 ...

Kenworth's K100 semi-truck is one of the all-time greats and is a fixture of popular culture. So why did Kenworth discontinue ...

For the "Transformers" fans out there, that absolutely overshadows the kind of semi-truck that Optimus Prime is. To power it, the Tractomas has a Caterpillar 27-liter diesel engine under the hood ...

But it is his role in “Transformers” as the wise Swiss Army Knife semi-truck-turned-robot Optimus Prime that has earned Cullen the most attention. As it turns out, the inspiration for that ...

Inspired by the iconic Transformers: The Movie, there's more than meets the eye with Hasbro's newest action figure take on Optimus Prime ... transformed into his semi-truck vehicle mode in ...

Besides his voice and cool faceplate, Optimus Prime's most distinctive ... into a Chevy Camaro. Optimus' semi-truck form is also based on a real truck, but only eagle-eyed fans have been able ...