Having had a stalker, I too would find this behaviour pretty creepy. I'm confident my T would freak out if I did the same as you! I do google him occasionally, but I draw a very thick line between googling and actually turning up in person. To be honest, I don't understand the compulsion to drive over to his territory at all. I feel guilty driving through his village even for legitimate reasons, and I live in permanent fear of bumping in to him in the 'real world'.

My opinion (which isn't necessarily worth much!) would be to tell your T what you did, and have you both work out a plan to stop it happening, and to stop that behaviour escalating. By not telling your T, it just makes the whole situation even creepier. I sure wish my stalker had spoken to a T about his compulsions!