We have the same problem here in Australia. On the news last night they said that some servos were thinking of setting up spikes to stop people driving off with out paying.
Ah , another Aussie going to the states? Cool mate , been there done that. San Francisco is a great place to go and I loved it there. Its a hilly city but! Go to Polk Street for a walk and see the poofs. Reminds me of Sydney there. Also go to Coit Tower , the view is fantastic there. Fishermans...