This time of year is quite windy here in Costa Rica, and this year is windier than most. It's great going with the wind, but into the wind really sucks, so I draft cars all the time when I'm headed into the wind. I just hang off rear corner in case they apply the brakes, but not a close as in that video, and it really takes a lot of the edge off of the wind. While I'm sure it's possible, and I think the record is close to 90mph with a cyclist tucked in behind a wind barrier, something doesn't seem quite right about that video.
John