From the Super Mario Wiki
The Ice-blue Poltergust is an unlockable kart in Mario Kart Tour. It is a variation of the Poltergust 4000 with an icy-blue color scheme (hence the name) and is classified as a tour-exclusive High-End kart. Unlike the Poltergust 4000, using Dash Panels grants more points when using this kart. Also unlike the Poltergust 4000, it uses giant versions of the Pipe Buggy's tires (this currently makes it the only kart in the game to use the extension for the Monster tires). Like the original Poltergust 4000, the emblem is located by the nozzle.
The vehicle is exclusively obtainable during the Ice Tour in the second week's spotlight.
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