[AutoGuide.com]

Unveiled as the Aqua at the Tokyo Motor Show, Toyota will soon offer this small hybrid in North America as the fourth member of the Prius family of vehicles. Billed as the Prius c for the U.S. this Yaris-based machine is powered by a 1.5-liter Hybrid Synergy Drive engine which Toyota claims will achieve as much as 82-94 mpg on the less stringent Japanese test cycle.

Don't expect numbers that high when it arrives in North America but the car will out-shine the current Prius, which already achieves an incredible 50 mpg average rating. And as an added bonus, it's certain to undercut the Prius in terms of price too.

Look for full details when Toyota unveils our version of the Prius c at the Detroit Auto Show in January.

More: Toyota Prius c Revealed with Over 50 MPG Rating: 2011 Tokyo Motor Show on Autoguide.com