as I stated before I cancelled a journey in eastern spain that day because the gusts of wind rendered the conditions very difficult by blowing the vehicle sideways ...and at much lower speeds than alonso was driving at , albeit in a heavier vehicleturbof1 wrote:(so far the memory loss speculation!)
Could be a lot of things. Power steering failing, something that broke in the steering wheel, suspension,... . It does by no means rule out the gush of wind theory since it influences grip hence steering too, understeering off track.
In short can be anything from the steering wheel forward. I think that rules out an electric shock too, since the sensation would definitely be something else then "heavy steering".
the last time I experienced such conditions was in 1987 when the uk had a hurricane ...I was in spain who got it as well and got blown off the road on to the hard shoulder when a truck passed in the other direction ...my speed at the time was perhaps 50kph !