Nearly 77% of U.S. job commuting is by single-person auto. Coaxing more people into each auto, sharing autos, or eliminating trips altogether can reduce work-related VMT by 6–12%. These approaches mainly focus on telecommuting, carsharing, and carpooling. In addition to reducing VMT and producing energy savings, alternative-commute business models are being funded by many entrepreneurs and venture capital firms seeking to raise vehicle utilization rates (U.S. autos average only 4%) and lower the cost of personal vehicle ownership. Businesses are experimenting with alternative-commute strategies for their own employees as well: British Telecom's "Workabout" program allows 7% of its workforce (7,500 people) to telecommute about 3 days per workweek. Employees come from all different aspects of the company's operations. Besides the program's energy and cost savings, reported auxiliary benefits include one-third less sick leave taken and improved labor productivity.
U.S. Bureau of Transportation Statistics. 2010. "Table 10: Principal Means of Transportation to Work." link