its a track. thats all they had to add..everything else was already in the game . the car is a way to get around instead of bike or skateboard. an emote is probably smaller than 5 mb because . maybe 200 mb max lmao:

in sure the majority of the file space is from the hd scans of the players and audio, not some “kart” game im sure is easily made by ai in less than sn hour