By | January 07 2013 5:59 AM

When membership-based, car-sharing provider Zipcar Inc. (NASDAQ:ZIP) was founded more than 10 years ago, it was hailed as an idea whose time should have come before then: It was that simple -- a means to offer an economical way for the urban carless to easily grab a vehicle at any time for a few hours without the time-consuming red tape and rigmarole of a typical car-rental experience.