What happened to this "party" that she was going to? If that wasn't the case, clearly there has to be some sort of internet/phone trail! It's not like he was a complete stranger and picked her up and she got into the car willingly.At this point, I am banking that someone else picked her up. And, knowing a little that I know, this small party was at Longoria's house.
SBM
He did say he had a small group of friends over before going out to eat with his wife..If only the first part is true maybe he offered to drive her home & she accepted? There would be witnesses to that tho so did nobody speak up or did they & this is how LE got the jump on him so fast?
ETA..IIRC, he talked to the media & told them when the last time he had seen Alicia..IOW! Proof that he did in fact know her..But how??