Already on the market - velomobiles like the GoOne3 can be had with electric assist like the Bionx systems. And they're aero enough to cruise at 30+ mph on human power alone.SEK82089 said:True. I was thinking that some one on the board had seen it or even operated it. I think it would be cool if someone could engineer a vehicle that incorporated human power with electric or even steam power. I'd want something like that.