A Toyota Parlee Prius?

How about a Toyota Prius on two wheels? Yes, that's what you'll find tucked between the rows of show cars at the Toyota stand.

This Prius doesn't have an electric motor or a gasoline engine. Rather, it's powered by a hybrid of muscle and willpower.

Toyota has partnered with Parlee Cycles to make this Prius bicycle a reality -- or at least, a concept. Among its features: a built-in smartphone dock on the handle bars and a special helmet that allows riders to shift gears using brain waves.