Innocent American lady gets arse fucked

I think I see more and more tourists in London everyday and this one was from America. A petite lady with long dark hair who said she wanted to go to Stonehenge. I don't think she realized just how far it was, so to help her out I said I would do the journey for free if she showed me her tits. As most of them do she whipped them out and what a lovely pair of tits they were. I then offered to be her private taxi for the weekend if she let me fuck her in the back of the cab. She thought it was a good idea, so I was soon in the back to collect on our deal. When I got in the back she was already playing with her pussy, these Americans can be real dirty when you get them going. It was time for her to get fucked in what looked like a very pretty tight pussy, and then I'm gonna try and fuck her in the arse. This was gonna be a great wank bank moment.