For those that don't know, uberX uses hybrid cars instead of luxury sedans [1]. [1] http://blog.uber.com/2012/07/03/sf-vehicle-choice/ http://blog.uber.com/201

For those that don't know, uberX uses hybrid cars instead of luxury sedans [1]. [1] http://blog.uber.com/2012/07/03/sf-vehicle-choice/ http://blog.uber.com/2012/07/03/sf-vehicle-choice/