From the Super Mario Wiki, the Mario encyclopedia
The Dragonfly is Wario's unlockable kart in Mario Kart DS. It is unlocked after the player beats the Nitro Grand Prix in 100cc mode, just like all the other unlockable karts in the game. It resembles a red tractor. The emblem is located on the hood. It has fairly low acceleration, handling, and drift, along with high speed, weight, and items. It is one of the heaviest karts in the game; its weight is tied with the Rambi Rider and ROB-LGS, and it has the same speed as the Poltergust 4000, Standard DK and Wildlife. It features the same drift as the Banisher, Brute, Dry Bomber, Standard DB and Standard WR.
The kart is unlocked for Luigi and R.O.B. as well when the player gets gold trophies in all Nitro or Retro Courses in 150cc, and becomes available for everyone else when gold trophies are obtained in every cup in Mirror Mode.
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