It's a deadly, no it's a Fatal Inertia demo on the XBLM

Available on the Marketplace to US and Japanese Xbox Live members is a brand new and steamy Fatal Inertia demo. The demo, which clocks in at 380MB, takes place in a "brave new world of combat racing" and features "gravity-defying machines [that] are no longer confined to the speedways and stadiums of centuries past". Sounds like some Awesomeness with a capital "A" to us ... or it could be very lame. So, we recommend garnering your opinion when you finish downloading the Fatal Inertia demo and giving it a try. You know, because that's how you roll.