Today on Green Car Reports: Audi will unveil an electric crossover concept at the 2014 Detroit Auto Show, large companies prepare to pay for carbon emissions, and a new all-in-one wheel for e-bicycles hits the market. All this and more on Green Car Reports.

Hydrogen fuel-cell vehicles are back in the news--but can they really compete with electric cars?

Find out how to slay a Tesla Model S electric-draw vampire.

The Honda Insight hybrid could be gone by 2015.

Audi will unveil an electric crossover concept at the 2014 Detroit Auto Show in January.

Pricing carbon emissions? Bring it on, say some large companies.

Final Update: Plug-in electric car sales for November are down from October.

Will an all-in-one wheel help e-bicycles swamp electric cars?

Five pieces of quick advice on buying a used Toyota Prius.

New-car fuel economy has risen 23 percent since 2007, according to the University of Michigan Transportation Research Institute.

Finally, the McLaren P1 hybrid supercar laps the Nürburgring-Nordschleife in under seven minutes.

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