This weekend, GM is holding a free Ride and Drive event in the Epcot Parking area. The event is free and open to anyone! There will be over 150 cars to drive, including the new Chevy Volt! There will be snacks and a kids area as well.
There is no cost to get in, but you will probably have to pay for Epcot parking, unless you have a parking pass or Disney annual pass.
The event runs Friday, Saturday and Sunday from 8am-5pm. Registration stops at 4pm, so I advise getting there early. You must be 18 and have a valid driver's license to test drive the cars.