only the car and when his parents and that said when he left etc. going to Bradford, York, and Bridlington is interesting too. also the ticket and the finger print on it.
Don't suppose he took the £300,000 from dad and did a runner to Idaho? Just my opinion, but I wouldn't trust someone who, supposedly, can't say "no", with that sort of money.
I don't suppose you know if Russell is still "missing" or is he now "declared dead"?