15. Kaiser Jeep M715
This interesting vehicle is primarily a military truck. But they sold a few of them to civilian customers. They based the M715 on the Jeep Gladiator pickup, introducing it in the late ‘60s for the U.S. Army. The engine was a dependable, strong six-cylinder with just 130 HP.
However, it had a lot of torque, which was necessary to move this three-ton truck. They built the M715 to be easy to service and extremely durable, which it proved in the Vietnam War as well as several other conflicts. Kaiser Jeep produced over 30,000 M715s until 1969.