The only reason I can see him to run from the situation is because he was intoxicated in some manner when the crash occurred. Were any of the windows broken on the vehicle? Is it possible his backpack flew out during impact or was it more likely he was walking and carrying the bag and dropped it? Again, I can't see this as a scenario unless maybe he didn't want to bring the alleged 'narcotics' into someone else's vehicle. Still seems unlikely, as if someone came they probably could have helped him locate his phone, he could have grabbed the essentials out of the car/backpack. If he was disoriented and wandered off, I still wonder why his backpack would be left behind. If he has enough awareness to grab it, why not put it on your back and start walking. MOO so many unanswered questions!?