I don't know about the W220 , but for earlier models , like the W100 and a few others , there was an 'emergency' spacer available which could be inserted to raise the car to a fixed height so that it could be moved , no suspension movement though .
Depending on the setup ( I don't know the model ) you could possibly jack the car up and insert wooden blocks to keep the suspension up ? Not something I would want to drive far with , but in emergency and for a short distance might be OK , or just to get onto a recovery trailer , which is what the ones I mentioned were really for .