If you need a car in San Francisco or anywhere in the country you can easily and affordably get it through the website of San Francisco Car Rental. Just go to their site, enter the time and place you need a car. Enter the type of car and all the available cars will appear. Then all you have to do is pick the one you want. You may not get the exact make and color but it will be the very similar. I do not know of a faster or better way to rent a car. I use them often.