I like Vehicles! I think you can slot them into a similar part of your brain where you slot Equipment, because they are not really threats on their own and you need a creature in play to make them do anything. So a deck really only wants like 1 or 2 of them at most, and you probably want them to be decently powerful for players to justify wanting to put them in their deck. Vehicles with low crew numbers tend to be the most flexible and useful, similar to equipment with cheap equip costs. Ones that have alternate means of animating them besides crewing also tend to be more flexible.
So I think they are at their best in cube when there's only a few of them and they're a little bit above the power curve.
So I think they are at their best in cube when there's only a few of them and they're a little bit above the power curve.