I'm sure I'm not alone in wondering whether the days of open cockpit racing are coming to an end. I know the recent incidents, with Surtees tragic accident last weekend in F2, and Massa's incident today, were unusual, random events - but closed canopies could have saved both drivers from injury. Motorsport is dangerous, and purists may argue such measures aren't necessary, but surely it's time to re-examine driver safety? 
I think canopies are something that should seriously be considered as an impact to the head at the kind of speeds these cars reach can, as proven so recently, seriously hurt and even kill the driver. Of course, as I stated in the other thread, there are also drawbacks. Damage to the canopy could result in the driver becoming sealed in a vehicle that is burning or when they require serious medical attention and the delay could lead to their condition ending up worse than it would be in an open-topped vehicle.
So...yes and no, I guess. :S