I read about this as well, the Germans used it to help with Blitzkrieg and I think he had a platoons worth (approx 10 men) and took the lot by mistake and spent a week skiing non-stop as he was as you say "off his tits". I shouldn't laugh as this was serious, but I've had friends who've done this for a weekend at Wigan Pier in the last 70's. They were trashed at the end of the weekend, doing this for a week seems beyond comprehension. The people tracking him must have thought he was super human. I've never touched speed as 1) I never had the money when I was younger 2) As I've got older, my drug of choice is a rather nice bottle of Chateau Montrachet (which is probably significantly more expensive than speed is now)
Rob