Is that allowed? Directly on the motorway?

So I took a shuttle bus and thought it was private. But when I got in, there was already a guy in it. Of course I was wearing very sexy leather and my knickers, well, they were a bit special too. The door opened and he couldn't believe his eyes and was simply flabbergasted. We soon didn't care where we were, and then we got down to business in the middle of the journey. God it was awesome, the driver kept looking back at us, but he was certainly having fun watching.... We were in full action, doggy, riding, ... and all the cars next to us saw it. What a great kick, in the middle of the motorway, until he squirts on my cunt. Would you have dared to do that?