I believe they aren't having a Safety Car for the game due to the fact that driving slowly at that stage won't be intresting. I believe this, I am sure I read it somewhere. Don't believe it 100% though!
I'd rather not have a safety car than wait another couple of months for them to put it in IMO. But if the AI is good and wont just crash on 1st corner or do any other stupid crashed then it will be a great addition for 2011 in races over 20%/30% race distance IMO.
I think its useful to remember this is Codies first F1 game (they didn't actually develop the F1 2009 title). Its not unusual for first attempts to not include a safety car - I don't remember a safety car in GP2 for example and have iRacing added a safety car yet?
Safety cars do of course influence the outcome of a race, but having driven behind a safety car in GTR2, it is incredibly boring. And GTR2s implementation was pretty simplistic - I could overtake with nothing more than a verbal warning. I'm not sure if people expect the detail of safety car lines on the track (Hamilton at Valencia) or 10 car length rules (Vettel at Hungaroring) but coding a safety car won't be easy.