We just ate here today! I don't know their rules, but as I looked around, there are cars that are 3 rows like the PP said, there are cars that are not rows, but rather a table between the front and back with 6 chairs, and some cars that are 2 rows. As I looked around, I saw one family with 2 adults and a child between then on one row, so if you have a little one they might let you sit 3 and 2, but I don't know if this is the norm or not. FWIW, they were sitting in the front of a car with an empty row and then a couple in the back, not sure if the two groups were related or not, so I can't be sure they didn't seat them in 2 rows they just chose to sit in 1 row.