[Onkel Neal]

http://www.theverge.com/2016/5/26/11...are-silenthawk

Both are prototypes for now, but Logos has been touting its SilentHawk concepts for a couple years now. It intends to create a bike that can reach 55 mph on "rugged terrain" with a removable combustion engine and that its electric motor — at least in early prototypes — was to be based on something unique. In 2014, Logos told War is Boring that “Our hybrid-electric propulsion system has already been proven on a prior aircraft program.”