The US' special operations forces frequently can't rely on conventional ground transportation for their covert ops -- a loud engine is guaranteed to blow their cover. To tackle this problem, DARPA has just awarded Logos Technologies a contract to build a stealthy hybrid motorcycle for the military. The design modifies BRD's all-electric RedShift MX (pictured here) with a quiet hybrid power system that can run on multiple fuel types. The overhaul lets soldiers travel long distances while keeping a relatively low profile, and they can run solely on electric power for shorter periods if silence is absolutely vital. It's too soon to say when the bike will go into service or just how well it will perform, but it could be a lifesaver for troops that need both speed and secrecy.