What is the most automotive fun you can have while getting 30+ MPG?

While it might be a desirable attribute in the car you drive every day, fuel economy is not usually one of the features that keep you up at night lusting after your dream car. In the wake of rising gas prices and the associated hysteria we want to know what you think is the most automotive fun you can have in a car… » 3/12/11 4:00pm 3/12/11 4:00pm