yes, you are right, the smallest one is ~2.4 x 3.6 M. I am just thinking about setting it up inside a carpark/ common area near my home. do you think the quality is good, say the surface of the track, what material. flat enough? traction good enough? durable?
Let me know if you plan to buy one, I'll join in when dNaNo in stock !
As far as I know, those are called EVA material. Offical track material for Kyosho Mini-Z race in Japan. EVA commonly used in those slippers or sandals that wearing to the beach.