"It's horrible, especially for his family and close friends not knowing what's going to happen. In that regard, as I said, I'm still shocked as everyone and obviously I pray and hope a miracle will happen and he will come back and be the person he has always been before."
Schumacher suffered severe head injuries when he hit his head on a rock while skiing in the French Alps on Dec. 29 and has been in an induced coma since. He remains in a stable condition.
Preseason testing continues in southern Spain until Friday. The next tests will be held in Bahrain on Feb. 19-22 and Feb. 27-March 2. The season opens with the Australian Grand Prix on March 16.