I just tried the Bombadier code on the site and it really gave me a good price. Almost $100 off my 5 day rental.
But I did notice one thing. There's no mileage included with the Bombadier code, it's .25/mile. Just something to be wary of for those who want to use it and plan on driving a lot. Since I was planning on at least 500 miles, it actually would end up more expensive.