If all you need is four wheels and an engine, opt for an economy car. In fact, they're the most popular rental vehicle category in Oklahoma. Along with all the standard features, they come with advantages like superb fuel economy and cheap rental fees. Grab the keys to one and make your way around Oklahoma City and Tulsa with ease.Obviously, you can't vacation in Oklahoma without seeing a few of its natural beauty spots. Go for a road trip around prairies and rolling hills from the comfort of something larger, like a mid-size SUV. Pack up your passengers and whatever supplies you need --- these models offer enough space for your luggage without compromising on room.