Sports Illustrated isn't exactly my go to source for racing news, but if their article is at all accurate, it doesn't look good for Shumi.
If my memory serves, Chris da Matta was in an induced coma for only about 4-6 days before the docs brought him out. I know every patient and head injury is different, but if his doctors have been brining Michael back to semi conscious state and he is showing no response, that can't be a good sign.
*Not a doctor of any kind. **Haven't stayed a a Holiday Inn recently. ***Sure as hell hope I'm wrong.