It is scalable since it can add additional circuits that will be added on.
My 15 month old son is very happy with his gift but at the moment it does not really use the circuit, by cons he plays with mobile Tut tut.
I noticed some clashes still in the use of the lift with a Tut Tut mobile was not eject properly.
Garage acknowledges and says the names of cars through an ingenious system when the small presses on the car at the gate of the floor.
The pleasure of playing with the garage probably grow with my little boy and that's a good thing.