He has always had a crew with him, usually 3-4 guys and they crank out one or two cars at a time depending on the car type, guys who's with. I ask everyone to be there between 930/945ish so that I know he's not waiting on anyone at any point. If he's waiting, I'll just let them leave so they can get to the next job.
That said, at this time I don't have any more room, it's currently looking like 9 cars, and that's only cause we have a couple trucks this time around. Otherwise we cap the events at 7.