Well, there's really no excuse now. You must buy Burnout Paradise. It's only $20 on amazon.com. Make sure you look at the right hand side of the screen for all your buying options. It may be one of the smaller options!
If it's sold out, you can also buy it on Newegg.com for the same price. With motorcycles, Trophies, and more to come, this is one of the easiest no-brain purchases we've seen in quite some time. Go, go, go!