A recumbent trike riding friend told me she had touched 70mph coming off Shap Fell with a full camping load onboard. Given I've topped 50mph I believe her. On the Tour de France TV coverage they frequently show the TV Motorbike's speedo on descents and I've seen 115kph on one of those. If a stick bike can do it a recumbent certainly can.
Yeah I knew the pro's went as quick down the mountains in the TDF, 70 in the UK though, wow, fair play to her. I've not been down that road but I'm sure the road is not as wide and empty as the one on that american clip either.
I've never had a go on a recumbent but have a friend who recently got one and he's offered to give me a go, its a basic one though, not with a fairing or anything.
I think its the old james bond movies and the cheesy batman series of my youth, but i have a recurring fear about recumbents that in case of an accident that chainring in front of you, between your legs has the potential to do more than create a few more creases in the scrotum, more like totally cut you in half like a buzz saw!