A:AnswerYes! The cars use a sensor on the bottom to read the track they are on so you can make it any configuration with any cars. However I will warn that the tracks are big. One set takes up a lot of floor space (at least 5' x 5') so make sure you have a lot of room if you plan to do two.
A:AnswerEach car and controller have their own track slot. I dont have 2 sets. That being said if each has their own track slot should be ok. Not sure about the side by side w 4 cars. Maybe 2 cars for each slot whick would be an unfair advantage ti the cars in the lead. That may not be possible...
