Answer:

karts

AnswerCrossword Clue
KARTSSmall racers
KARTSZippy racers
KARTSMiniature racing autos
KARTSVehicles raced by Mario and friends
KARTSMini racers
KARTSGo-..: mini racers
KARTSSuper Mario racers
KARTSWii game rides for Mario and Luigi
KARTSGo-.. (racing vehicles)
KARTSGo-.. (kids' vehicles)
KARTSSmall racing vehicles
KARTSMotorized racers
KARTSGo- -- (kids' wheels)
KARTSGo-... (kids' racers)
KARTSGo-... (mini racers)
KARTSKiddie racers
KARTSMini racing vehicles