S2 = "Slim 2". This is one of the very first (if not THE first) really slim 2-wheel drive cars. I'm pretty sure it a least was the very first with a mid motor configuration. See more pics here:
http://www.tamiyaclub.com/showroom_m...0027&sid=22039
These moulded carbon fibre tubs, which are then CNC machined is THE by far coolest RC car component I have ever come across. And it's very solid & durable as well.
Elvo on here made a very cool prototype, called the "ELCO Project". It as I understand was a basis for the later S2 he and Jonathan (Old Timer) developed together. He had great success with his proto vs. the common rear motor cars.
elco 001 (Medium).jpgelcocad.jpg