Car-sharing members enjoy healthier lifestyles. I-GO members drive an average of only 500 miles per year, versus the typical car owner in Chicago who logs 10,000 on the odometer. As a result, they tend to also walk and bike a lot more, and use public transit more frequently—another form of sustainable transportation that’s far less harmful to the environment than millions of cars and trucks on our streets and highways. About half of the American population does not meet the Surgeon General’s recommendation of at least 30 minutes of physical activity a day. The evidence we’ve compiled suggests that one of the hidden benefits of car sharing could be helping citizens achieve this minimum health recommendation.