Shoppers' shifting values will lead to more green, fair, quality purchases

The car-sharing niche created by Zipcar in January 2000 is already starting to see more competitors. Hertz, Enterprise and U-Haul have come up with their own versions of short-term car rentals. Regional competitors such as City CarShare in San Francisco, Mint in New York and Boston; and I-GO in Chicago also are becoming bigger players. More...