Allegedly, FFVII's Cid appears near the start; and if you complete the game well enough, FFVIII's Squall shows up. Or something. That's what a review from a 1999 magazine said; I never bothered to check the game out. Seemed like a generic 'kart game', just with a chocobo lead character rather than Goofy/Buzz/Sonic in a go-kart.

Call me cynical, but...

Well, no buts. Just call me cynical.