Personally, I'm getting kind of tired with vehicles. Oh sure, they're novel, but it really feels like all the work I put in to my guys is taking a back seat to a gameplay mechanic which eliminates all my time and effort gearing up.

Edit: Come to think of it, don't get me wrong, driving a vehicle through an Iron Dwarf held battlefield to get to the gates of Ulduar while spouting flamy death everywhere sounds pretty badass. Stuff like that gets really old though after you've done it a few times. Especially in the case of the begining of an instance, where depending on the skill of the group, you have potentially undergeared players beating the first encounter handily, or over-geared players getting stuck on it because their shiny purples don't amount to a hill of beans in a vehicle.