Wow apparently MB is releasing the worlds most fuel efficient SUV, obviously MB is onto something with its green initiative, article below:
Mercedes will release a diesel-hybrid SUV that gets a whopping 40-MPG. The new emissions control system (called BlueTec) also makes it the cleanest SUV on the planet. Add the latest in emissions-control technology, and this vehicle breaks the world's record for lowest carbon-emitting SUV. Now, if they would just let us put biodiesel in it.....
Read more - Cleanest SUV on the Planet: 40-MPG Diesel-Hybrid