Not to belabor the point, but there's this:
"On 1 May 1994, during the customary drivers' briefing, the remaining drivers agreed to the reformation of the Grand Prix Drivers' Association, with Senna, Gerhard Berger and Michael Schumacher as its first directors. The Association subsequently pressed for improvements to car and circuit safety in the wake of Imola and other serious crashes during the 1994 season."
With regards to IndyCar, I blame the haphazard organization, and feel that there is no way they can safely race on oval tracks with concrete walls and no runoff. Having a pack of open-wheel cars doing 225mph, inches from a concrete wall, is just stupid. What's more, the Vegas track hadn't been used by IndyCar for years, and half of the drivers aren't even signed to teams. It's a big mess. And don't forget the out-of-the-blue German Indy race, where Alex Zanardi lost his legs.
Let NASCAR do the ovals; IndyCar should stick to road courses.