Gavin's Quirks - Quirk #1

Gavin has been doing this since he was 18 months old.  Doctor said if I can distract him and get his attention away from the Line then I have nothing to worry about.  It's when he's so deeply focused on the Line that I should let the Doc know.  It's kinda freaky when you turn your head doing something else and then you turn back and there's a line of cars in the middle of your house.  They all have to be facing the same way and cannot get out of the line.  At least he doesn't have to have them in size order yet.  Do I have an OCD child?!