Here are some extreme vehicles you will not believe exist.
One of them is a high-tech, prototype landing craft -Ultra Heavy-lift Amphibious Connector (UHAC), which the Marines were training with during the RIMPAC exercise in Hawaii.
Another is the Ripsaw. It is a developmental unmanned light tank designed and built by Howe & Howe Technologies for evaluation by the United States Army.
The Howe brothers started the Ripsaw as a small family project in 2000. They introduced it at a Dallas vehicle show in 2001, where it caught the interest of the U.S. Army. Later that year the U.S. Military ordered a prototype MS-1 to be made and shipped to Iraq.
The Ripsaw is intended to perform various missions including convoy protection, perimeter defense, surveillance, rescue, border patrol, crowd control, and explosive ordnance disposal.
Ripsaw EV2 is a luxury version, with a fully enclosed body and two seats inside the cab. It can exceed speeds of over 60 mph (97 km/h) and has a range of approximately 300 miles (480 km). It is currently unknown if the EV2 can mount remotely-operated weapon systems or not. This model is designed for the civilian market but still costs $295,000 with customisable features.
More extreme vehicles in this video: