Not to go off topic but Derek Daly was a piss poor F1 driver. He lucked his way into a potential race winning Williams in 1982, the story is that after Carlos Reutemann suddenly retired Frank Williams said "Sign Derek" (meaning Warwick) but they signed Daly by mistake, and was take to the cleaners by Keke Rosberg. He only out qualified Rosberg at the Swiss (French) GP and, by all accounts, he did this by cutting one of the corners. Rosberg did win the race though.
Daly disappeared without trace afterwards, well, he raced as unsuccessfully in CART as he had in F1. I'm not sure what qualifies him to be a driver steward but then what qualifies any of the old drivers who turn up at races as driver stewards apart from having been a driver? Perhaps there is an argument for having a full time driver steward. If there is I'd go for Derek Warwick.