Hybrid buses are becoming more common in metropolitan areas. Cities such as San Francisco, Phoenix and Baltimore have a hybrid fleet. An article at USA Today talks more about this trend: http://www.usatoday.com/news/nation/2008-01-21-masstransithybrids_N.htm
They use bicycles, motorbikes, cars, trucks and buses as well as camels.
Depends on where they're being operated and who the chassis manufacturer was. European manufacturers typically use OEM proprietary rears (e.g., a bus on a Volvo chassis would use Volvo diffs, a bus on a MAN chassis would use MAN diffs, etc.). US made buses would use Eaton or Dana differentials, although most double decker buses in the US are actually imported.
Yes, lots of them.
Toyota has 3 hybrid vehicles, the Prius, a Camry hybrid and a Highlander hybrid.
Metro Transit is located in the US state of Minnesota, particularly between the cities of St. Paul and Minneapolis. It is a network of buses, trains and rail between the region.
These are some cars available in the US: * Chevrolet Malibu Hybrid * Honda Civic * Lexus RX400h * Nissan Altima Hybrid * Toyota Hybrid-X Concept * Toyota Prius
If more of us use buses, yes it can help. Buses usually produce much less carbon dioxide per passenger-mile than do private cars.
Automatic
Some of the cities in the US that have banned the use of styrofoam include San Francisco, Seattle, Portland, and New York City. These cities have implemented bans on items like styrofoam food containers and packaging to reduce environmental impact.
Maybe in cities directly on the border, but that's about it.
it depends
No, it would be impossible to name all the cities in the US.