Enterprise Rent-A-Car is conveniently located near I-696, I-275 and M-5. The company has an abundance of locations across the United States. It requires no minimum age for rental as long as the driver has a valid license, but if the driver is under 21 there is a nominal fee. GPS navigation systems are available in some of the vehicles. Returns to a different location are allowed, but there is a fee charged if the rental car is returned to an airport location.