Booster Seat

The Baby Booster (also known as Booster Seat in North America) is a kart that appears in Mario Kart Wii. The kart is a baby stroller with an engine and 2 exhaust pipes in the back, a pair of headlamps on the front of the vehicle, and a roof that tends to open when the characters jump from the cab. The emblem is on the front and the back of the cab. Only small characters can drive this vehicle.

Stats
The Baby Booster is the slowest kart in the game, while it shows an average drift. On the other hand, the kart shows a high acceleration, off-road and mini-turbo. The Baby Booster also has the highest level of handling among karts. However, it gets knocked around a lot due to its low weight. It shares the same stats with the Nano Bike.
 * Speed: Low
 * Weight: Low
 * Acceleration: High
 * Handling: Excellent
 * Drift: Medium
 * Off-Road: High
 * Mini-Turbo: Very High

Color Schemes

 * Baby Mario – (White cab, blue roof with a red stripe bordered by two white stripes, red wheels with blue hub-caps)
 * Baby Luigi – (White cab and roof that has three green stripes, green wheels with yellow hub caps)
 * Baby Peach – (Pink cab and roof with fringes and white stripe, white wheels with pink hub caps)
 * Baby Daisy – (Yellow cab, orange roof with fringes, white stripe bordered by two teal stripes, yellow-orange wheels with green hub caps)
 * Toad – (Blue cab, yellow roof with red fringes and stripes, yellow wheels with red hub caps)
 * Toadette – (Magenta cab, white roof with pink fringes, hot pink wheels with magenta hub caps)
 * Koopa Troopa – (Mint-green cab, light green roof with fringes and white stripe, turquoise wheels with green hub caps)
 * Dry Bones – (Black cab, wheels and roof that has red fringes and stripe bordered by white stripes)
 * Male Mii – (White cab, blue wheels, roof, and fringes W/ White stripe)
 * Female Mii – (White cab, pink wheels, roof and fringes W/ White stripe)

Trivia

 * The Baby Booster is the only vehicle other than the Twinkle Star in Mario Kart Wii to go through a design change other than a palette-swap. The case here is that the fringes of the Baby Booster's roof are absent when one of the Baby Mario Bros. is driving it.
 * The hub caps of Dry Bones's Baby Booster resemble a bird's eye view of his shell.
 * The Baby Booster has the same weight as the Bubble Bike.