"You remember those race car tracks where you could build them and make them go multiple directions?  The ones where the car had a needle on bottom that rested in a slot on the track."

He asks her as he walks down to the end of the counter.  He walks around the end and says. 

"Over here where the train set was."

He points out a track with multiple lanes and 2 cars sitting that look like real cars just much smaller.