The Toyota Dyna, making its debut in 1959 as the “Toyopet,” as it was initially named, spans eight generations of iterations as it became a well-known medium-duty commercial truck produced by Toyota. The “cab-over” trucks were available with either diesel or gasoline engines. The models are renowned in Asia and other parts of the world as workhorses for various commercial applications. Today the Dyna is offered in a diesel hybrid model that may run only on motor power if desired. Since 1985 the ToyoAce and Dyna truck lines have been merged, with the Dynas generally being intended for heavier duty work.