My 2 yr old son loves this coaster.  We started with the small step 2 and then we upgraded to the extreme this Christmas.  We use this in our back yard along with his other step 2 swing set.  It never wants to come inside.  What my sons loves too is that he can walk up the coaster and get in the cart.  It also goes pretty far so make sure your in a place with enough room for it to finish.