I would do it anyway, just to make sure he didn't already put something on the laptop he gave you. A phony e-mail, from a girlfriend at a newly-created gmail account with a username like "surferGuy32", agreeing on some public (but 1-in-a-million place that he would go there coincidentally -- pick some place that's TOTALLY not "him") rendezvous location ought to do the trick. Then just go there, with your girlfriend, park your car and wait for the fun to begin. Or not.