this is taken from my youngest brothers pushbike riding downhill in the alps, it's not speeded up
[youtube]yINs_PGu6Mc[/youtube]
bear in mind these cyclists don't have any armour whatsoever,
I couldn't believe the overtakes, one (the last I think) I felt was slightly blind also
I felt he could well have come a cropper if a vehicle travelling in the opposite direction had prevented him running wide a couple of times
I wouldn't attempt doing those speeds (in those circumstances) on a motorcycle let alone a push bike.