The Ripsaw is a developmental unmanned light tank designed and built by Howe & Howe Technologies for evaluation by the United States Army. It is able to accelerate to 60 mph in about 4 seconds. 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.