This is a pack I might buy again...but other than having the Auroch as a vehicle, its kind of pointless. The game will provide you with cars anyway, these are just two extra.
The first is the Auroch, which is one for plowing through enemies with armor and ramming, while sacrificing speed. The other, as you might guess, is the Chaos 126pher which is built for speed and lacks armor and...well it's just too fast to enjoy really. It's still a cool vehicle, but there is no way i'm using it again unless i can up its armor...but i think you have to drive them to do that!
This DLC goes over mixed with me. I like the Auroch...it helped me with a level or two, It is touch and brutal and a cool truck. I'm going to RECCOMEND CAUTION when thinking about buying this. Know the vanilla game first. I bought it because i was into this game and i thought "DLC!, Yes!". This pack only let me down 50% because I only dig the Auroch. You can modify it to have the same speed as the Limo (which you have almost from the begginning).
You need not buy it unless you're into this game that much, or maybe you have a controller that will make it easier to drive than on a keyboard. Either way, the Auroch is awesome, the Chaos is strange. But I'm sure there are some people who like to go fast in the game. SO! I'm going to...
RECCOMEND BUYING THIS WITH SOME THOUGHT.