As we've established by majority vote, the best part of Halo is when you get to ride in the car with everyone. The Elephant lets you ride with your entire team at once. Ergo, Halo 3 is clearly the best Halo game.
Every so often I get a game of Sandtrap on the MCC and it's impossible not to chuckle at the goofiness of these things. Like, there's not much point to drive it around, but it's just so fun, you know? I think in CTF and Assault it might move your capture point, and it does move your team spawns, so maybe there is some neat strategy to it. But really, I want to give the designers a pat on the back for such goofy, fun idea. And give some side-eye to every future Halo game for not trying to 1-up this.
Either way, wake me up when Halo is this brave again. Has there been anything this zany since? Anything else any other game has tried that is as kind of... pointless but fun?