Take a look at www.expedia.com for the car rental. Dollar is good but I find that Enterprise and Alamo are usually competitive for off airport agencies. (They pick you up in a bus and transport you to the egency... usually quite close. Additionally, as you probably know, one of the major additional costs is additional insurance. It can run to half of the rental fee per day. Check with your personal car insurance agency to see if they will cover you on your policy. We do that here in the U.S. and it saves a lot of money. As already advised... don't take the gas deal... fill it up on your own. By the way, gas prices are falling dramatically. It's down in my neck of the woods to just over $2.00 per gallon from nearly $3.00 just a few weeks ago... Welcome to the U.S.!