The following cars represent the most technically advanced available.
The 2014 Subaru XV Crosstrek Hybrid struggles to justify its bigger price tag, as it doesn't have significant power or efficiency gains over even its non-hybrid base model and pales in comparison to other hybrid wagons.
Toyota isn't exactly pricing its first hydrogen fuel cell vehicle to move. But it does appear to be price competitive with the Tesla Model S.
The Japanese government is getting behind fuel-cell vehicles in a big way. This follows recent comments from a Toyota executive that battery-powered cars are not the future of long-range alternative fuel cars.
Toyota and Honda are eying 2015 launches of consumer fuel cell vehicles, a source tells Nikkei, adding that prices could go as low as $30,000 by the next decade.
The car company on Monday talks up its bet for electric cars, which it plans to launch in California next year.
Toyota has been busy building the car of the future. The automaker is committed to bringing a hydrogen fuel cell vehicle to the market in 2015.
Taking center stage for Toyota at CES 2014 will be its Fuel Cell Vehicle concept car, which will demonstrate Toyota's research into clean automotive energy.
Delphi's Vehicle Diagnostics system works best as a tool for parents who let their kids drive the family car, as it shows the car location and will trigger an alert if the car leaves a proscribed area.
Although not an engaging car to drive, the 2014 Lexus GS 450h delivers comfort and an easy driving character, while delivering excellent fuel economy.
The push for hydrogen-powered fuel cell vehicles got an extra push from agreements by five major automakers to co-develop the technology.