L&O: Criminal Intent 05/01

So, how did the bad guy lure the victim into the doomed car? I know that he posed as the victim online, but why did the victim actually get INTO the car? I missed that.

The victim used some on-line resource to get rides to rave-like parties. The bad guy must have posed as another on-line persona to get him (the victim) to think he was getting into a car with other party-goers.