The items pictured are the actual items you will receive.
This is the entire set of 8, with all paperwork bags and cases. The first 3 racers come with gliders. Toad and Yoshi have underwater propellers on the back of their vehicle, and the final 3 heavyweights are in big wheel karts.
These were pull-back race karts that came in the clear cylinders pictured stuck on top of cans iced coffee. It was a complimentary gift for purchasing Suntory BOSS Coffee in Japan in 2011 and served as cross promotion for Mario Kart 7 on 3DS.