[AlexK]

Forgot to mention few details: GLK does come with a real spare tire (it's "deflated" and comes with a (free) little electric air compressor) and on latest models with Mbrace option you can use an iPhone-based app to do stuff like locate the parked car (for safety reasons you can only do that within 1-mile radius from your car) or close/open doors, directly from your iPhone (a free app available at iTunes USA store), and the navigation map updates are user-installable (you can buy disks with maps yourself, map data provided by Navteq). Also, GLK's stock suspension is somewhat self-adjustable depending on your driving behavior (it's a fully mechanical system, MB calls it "Agility Control").