Toad in the Jet Bubble.
The Jet Bubble is a small bike in Mario Kart Wii. It turns corners about the same as the Sneakster, and it has very balanced stats. As its name might suggest, it looks a little bit like two round bubbles held together by the seat.
Stats
Speed: 48
Weight: 27
Acceleration: 40
Handling: 40
Drift: 45
Off-Road: 35
Mini-Turbo: 37