* So where does the Bowser Shell Item come from in ''Double Dash''?
** Maybe it's a replica.
** If Bowser and his son are as close to normal koopas as the games like to imply, then their shells are probably removable and they probably have more of them in stock.
* Why does the allegro theme of MK7's Rainbow Road theme (at the last sections) starts from MusicalNod of N64's RR theme instead start over from beggining like other courses? http://www.youtube.com/watch?feature=player_detailpage&v=gQl4TRN9WqU#t=70s (from 1:10, it start from there)
** Because it's the CLIMAX of the race. If it started over from the beginning, there'd be no time for it to get to the climax of the song. Starting it from the climax is like a variation of ThemeMusicPowerUp and really juices you up for that final sprint to the finish.
* How do races involving bombs and missiles make it past Sunshine Airport's security?
** On a related note, how is it safe to fly those planes with all that lightning? In fact, who thought it was safe to host a go-kart race in a busy airport?
* Why is it that ''Mario Kart: Super Circuit'' has so little Retro racetrack representation compared to other Mario Kart games relative to its age? Almost every course (15 out of 16) from ''Mario Kart 64'' has been used, as is three-quarters (12 out of 16) of ''Mario Kart: Double Dash!!'', but only two-fifths (8 out of 20) have been used in ''Mario Kart: Super Circuit''. That being said, the amount from ''Super Mario Kart'' is only slightly higher (at 9 out of 10), but its themes and music recur so much that there's limited ability to bring back courses from that game. It's as if ''Super Circuit'' is being deliberately withheld from the Retro Cups. (These numbers don't include Battle courses, where there seems to be some sort of attempt at equal representation from past games.)