If you recognize him, you can call 713-704-4000.
Maybeng with tow companies to see what cas might hAve been aband one near that location,...probably a large task in such a big city, but maybe they they can somehow narrow it down by region, I dont know...maybe theres a vehicle that's been parked nearby for a while...but he had no belongings on him, no KEYS, phone, id, wallet, obviously since they can't I'd him, was he homeless? what type of condition was his clothing in? Is there a shelter close by to where he was hit since he had no keys, etc? Maybe something fell out of his pocket when he was hit..I hope he recovers well and they can I'd him.