Optimus' semi-truck form is also based on a real truck ... That Are Pure Nostalgia The original "Transformers" Optimus Prime ...

Optimus Prime's second most common alternate mode is that of a fire truck. This works for a few reasons, namely because it visually still resembles his original semi-truck form. Likewise ...

While Optimus Prime opens the film in the form of a rusted out 1973 Marmon cab-over truck, the autobot leader eventually takes the form of an awesome 2015 Western Star 5700-based semi. We'll see ...