That's certainly what happened to Montgomery County Maryland officials when they signed up with Enterprise Rent-A-Car for a car sharing service. The county reportedly paid over $100,000 for the program at $1,100 per month per car. The only problem is almost no one bothered to actually use the 28 available cars. Employees with county-provided vehicles have been reluctant to give up those cars in favor of the shared vehicles. The cars were only signed out 16 times in 3 1/2 months for a total of 84 hours. That comes out to $1,300 per hour! Perhaps the county should have made the program mandatory by taking away the assigned vehicles first!