Nobody has voted for the Phantom. Guess the Phantom is an extremely unpopular vehicle. It may be the only large vehicle that can drift off-road with an off-road stat of 56, but it's also the only bike with a drift stat lower than 20. It has a drift stat of 17, meaning it has the worst drift in the game, and this is a huge problem, as its abysmal drift stat, combined with its already wide outside drift, makes it nearly impossible to use on tracks with sharp turns like N64 DK's Jungle Parkway or SNES Mario Circuit 3. You have to be an ace to use this vehicle. I could say the same for other vehicles like the Jetsetter or Spear, which have very low stats other than high speed and weight. The Dolphin Dasher may have the worst drift stat among all inside drift bikes with a drift stat of 24, but it drifts inward, making it easier to control.
On top of that, its speed stat isn't really that good to begin with. It has the same speed stat as the Standard Bike M and Magikruiser, meaning all three bikes have a speed stat of 43. It's the third slowest large vehicle in the game, and it's only faster than the Offroader and Wario Bike. Even if Funky Kong uses it, its speed stat will be 47, but it will still be one point below that of the Jet Bubble and Dolphin Dasher, both of which are inside drift bikes and have a speed stat of 48. In other words, the Phantom is basically the Dolphin Dasher, but with outside drift. Similarly, the Zip Zip is the Magikruiser, but with outside drift.
Not to mention it's the second lightest large vehicle in the game, with a weight stat of just 51. It can't push around light vehicles as easily as other large vehicles can. It's only heavier than the Shooting Star, which has a weight stat of 48. Even if Bowser uses it, its weight stat will be 56, but it will still be the same as the Spear and Jetsetter, the latter of which is the lightest large kart in the game.