I like this kart, it looks good and drives good
but I think maybe the tires should be round. With the current tires it would stutter while driving.
And maybe you could include the custom coloring for the kart (that is used eg. for soccer mode). Currently it displays the ugly arrow on top in soccer mode.
(for documentation see here:
https://supertuxkart.net/Materials#Colorization)
I also noticed that the headlights do not work
(for documentation see here:
https://supertuxkart.net/Making_Karts:_Kart_Attachments_and_Effects)
And in my opinion the kart could be a bit less empty in the middle (where you can see through)
Keep up the good work!