From the Super Mario Wiki
The Poltergust 4000 is Luigi's kart of choice from Mario Kart DS. The kart appears to be the upgraded model of the Poltergust 3000 from Luigi's Mansion and is implied to be Professor E. Gadd's creation. It has good speed, acceleration and handling but low weight, drift and items. Its speed is tied with that of the Standard DK and the Dragonfly.
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