I don't mean to be offensive with this, but it seems that we don't have enough information to come to any consensus, or near consensus, conclusions.
Each theory seems to say more about the poster than anything else. The person who knows about bin lorries thinks it was the bin lorry. People who believe in government conspiracies think it must have a military connection. I'm full of thoughts of random murders and serial killers and think Corrie jumped into a vehicle for a lift home, but the person offering the lift had other motives. People who are concerned about drug crime think it had something to do with drugs. People who've read about the recent Grindr case think it was a gay sex hookup that went wrong. These things are saying more about us than about what really happened.
The more I think about it, I don't think Corrie was sitting waiting for someone who he'd agreed to meet up with in the club. I have not seen any source for the offer of the lift from the USAF guy, so I am virtually ignoring it...what if Corrie wasn't offered a lift, what if the guy just said, "I could have given him a lift home, and then he wouldn't have gone missing, SMH" and then the grapevine turned that into the offer of a lift home?
Someone mentioned Beck Row...was there a reason for that other than the car/metal yard there?