best defense
It seems to me that the best defense for a pedophile would be to say he knew it was an adult posing as a child and drove 300 miles to have sex with the adult posing as a child.
Now it may be a hard sell, but there are some pretty slimey lawyers out there that might pull it off.
-Steve G.
PS I hope there aren't any pedophiles or slimey lawyers reading this, I'd hate to give them any ideas.