Unlike last year, when standalone electric motors appeared on the list, this year's juiced-up winners are involved in hybrids and plug-ins.
See the new models and concept cars shown off at the 2014 Paris Motor Show.
With 1,500 horsepower from its V-8 engine and three electric motors, the Koenigsegg Regera, revealed at the 2015 Geneva auto show, is the most powerful plug-in hybrid production car.
The BMW Concept Active Tourer perhaps previews a plug-in hybrid version of an upcoming 1-series hatchback -- ideally combining the benefits of electric drive with those of a turbocharged combustion engine.
After a little more than three years on the market, the plug-in hybrid Volt is approaching 60,000 units sold. Is that enough momentum to compete with the mind share of the Prius and Tesla? We ask General Motors.
General Motors, responding to price competition in the electric vehicle market, cuts the price of its plug-in hybrid to $34,995.
Molly Wood takes a ride on Chaotic Moon Labs' Board of Awesomeness, and it is indeed awesome, until the boss pulls the plug.
The Business of Plugging In conference in Detroit brings together about a dozen types of electric vehicles.
Unlike the hard-top e-tron, which was purely electric, this model is a plug-in hybrid that uses a lithium ion battery plus a pair of 88bhp electric motors mounted to the front axle.
General Motors, electric companies, and the Electric Power Research Institute aim to lay the groundwork for stations to charge electric cars.
General Motors says its electric car will get 230 miles per gallon in the city. But there are still questions about how plug-in vehicles should be rated on fuel efficiency.