I had a nice 350 mile round trip to Newcastle - as it was business I had roof up so I did not look too windswept - on way home I was "making good progress" on the A66 ... It was very windy and both door tops were performing in alternate fashion which started to annoy me - so thought will stop for fuel in Brough when one side of the bonnet blew open !
Bonnet was secure prior to the start of the trip so don't know if it was wind pressure or the body had flexed allowing catch to undo - but will be fitting a bonnet belt as I jumped out of my skin.

Anybody else experienced the bonnet opening under speed.