Deliberate mistake: In the parking lot at the horse track, the old cars are so huge, they don't fit properly in the tiny modern spaces. They are hanging over the backs of the spaces so badly that the drivers would only have about two feet to try and get their enormous cars out of the spaces.
Deliberate mistake: Look closely at the horse track parking lot. To fit more of the cool period cars in the shot, the director has the next row of cars parked in what should be the driving area between rows.
Answer: I've considered 2 possibilities. One being the answer given about his cover, but I think he may have actually had it. When Goodcat is pointing a gun in his face as a child, he doesn't look scared in the least. The death of his parents "killed him" giving him the condition. Later proof is when he tells the Boss "You can only kill me once."