Yesterday, I bought a Scalextric set for my 2.5 year old son. Even though it says 5 and older, he loves it. He can even operate it quite well, and already understands the trigger concept. ie. don't go flat stick!
This Digital Set looks awesome, but not cheap.
www.scalextric.com/shop/sets/digital/pro-gt-c1260/#This is a serious set-up !!
www.phoenixslotcars.com/tracks.htmI think I will get the Digital Set, and not tell the wife what it costs!
