NOOOOOOOOOOOOOOOoooooooooooooooooooooooooooooo............................
Games made by Bethesda always suck me in. I watched the trailer....now I'm going to buy it next paycheck.
I'm broke and I can't be buying games like this, hope you're happy. 
(Question: Can you get different vehicles?)
Yes, you start with an ATV (non-upgradable), then you get a Buggy that you can earn upgrades for by racing, and the same for the Cuprino (basically a rally racing truck). That's it. You don't find vehicles and steal them, the vehicles you earn are the ones you get and are all you've got. The ATV is unarmed, the Buggy can carry rockets OR guns, and the Cuprino can be up-armored and carry rockets AND guns. There are also different "Mario Kart" style weapons and stuff you can deploy from your vehicle, such as mines or bombs that will follow and escort you, there are also shields and a repair tool that you can use while your moving during combat.
I must say the controls are awesome for the 360, driving is a blast with the controller and the gunplay doesn't feel hindered at all by the analog sticks. There are some sniping sidequest missions though that are REALLY difficult even with the CoD style aim-assist that you can enable, I'm sure they're much more enjoyable with a mouse. Weapon, ammo, and gadget selection on the controller are fluid but you do have to stop moving to change your weapon because it uses dual radial menus.
When you hold down RB/R1 you use the right stick to select your weapon and the left stick to select the kind of ammo to load into it. LB/L1 deploys your gadget whether it be a grenade, RC bomb car, turret, wingstick, or personal bandage and that gadget is selected by the D-pad. It's a little easier to drop a turret, chuck a grenade, and heal yourself than it is to snipe someone and switch to your shotgun if somebody sneaks up on you, but that's just what you have to deal with using an inferior control scheme to mouse+keyboard combo. You just gotta' be mindful to switch weapons from behind cover really, it's not that big of a deal.
Sprint is on the left stick and melee is on the right stick, CoD style. Connecting a melee hit is kind of hard though (I'm playing on Hard), the enemy doesn't just sit still when you run up on them. It's more of a defensive move if you're reloading or have the wrong weapon in your hands imo.
One cool feature that I want to make sure I don't forget to mention is the defibrillator mini-game. If your defibrillator is charged (seems to take about 5 minutes, which is a pretty long time for a firefight) you can perform a quick-time event style mini-game if you're killed and depending on how well you do you are revived with more health and any enemy within about 2 yards is stunned/killed by the static charge. It's a really cool way to keep on slugging on without Bioshock style vita-chambers or having to go back to your last save (there is no checkpoint system, you want to manually save often).