Could hydrogen vehicles take over as the 'green' car of choice?

Now that car makers have demonstrated through hybrid vehicle success that consumers want less-polluting tailpipes, they are shifting even greener. In 2015, Toyota will roll out the first hydrogen fuel-cell car for personal ...

Solo hybrid drivers in carpool lanes amplify gridlock

Allowing single-occupant hybrid cars to use carpool lanes – on some of Los Angeles' busiest highways during rush hour, no less – creates crushing congestion and about $4,500 per car in adverse social costs annually. That ...

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