Expedia has been in business for almost two decades. In that time, they have established themselves as a leader in the online travel industry. Not only can you rent cars through their website, but you can also choose a variety of bundling options to make your travel more convenient. Whether you choose to simply rent a vehicle, or book your car, hotel, and flight through them, you are sure to receive great service and good deals. An added bonus of going through Expedia is that they offer the ability to cancel or change almost any hotel reservation without a fee.