Safety should be the main focus of any racing series. And although the IRL will be introducing a new chassis design for 2012, the chassis design that was on the track Sunday has been around for almost ten years. It began life as the IR-03 (for the 2003 season) and became the IR-05 (in 2005) only because of an aero update - the chassis was the same. I'm not saying this to take a cheap shot at the IRL. But I know of no professional racing series which even allows chassis that old to be raced. Understand that there are chassis that have been built since 2003, but the design has been unchanged. And some of the chassis on track (mainly those used by the smaller teams with little money) are down right ancient. From what I understand, Simona de Silvestro has been racing a chassis that's a few years old, and has been patched together so many times that it's at least 100 pounds over its original weight. The chassis is called "Pork Chop" (because it's a pig). A racing chassis should not be patched together to the point that it severely affects the weight or balance. And it should not be so old that it has excessive flex - that's DANGEROUS! Aluminum fatigues and the fibers in carbon fiber eventually break down/fray.
I haven't read that anything related to chassis integrity influenced Wheldon's fatal crash. As Petra said, he went helmet first into the fence, from what I've read. But the fact that the IRL has been dicking around with introducing a new chassis for at least three years did (IMO) make a difference. While other professional racing series will update at least every couple of years, they went ten years. In the CART days, we typically saw new cars/designs every year, much like in Formula One. But in the IRL, with the influx of less experienced drivers, less talented ride buyers, an old chassis design and pack racing on 1.5 mile cookie cutter tracks designed for NASCAR, you have a recipe for disaster. And if not for the foot dragging of the IRL, the 2012 car should have been the 2011 car and Wheldon would likely be very much alive right now. At the very least, his car would not have become airborne in the fashion that it did, since there couldn't have been wheel-to-wheel contact with the new design.
And for the sake of safety (nothing to do with this incident), I would fire the guy who re-started an oval race this year in the RAIN! Brian Barnhart is known throughout North American racing circles as a joke. He should have never been given the job that he has (by Tony George). But give him enough time and he'll be linked to some future accident (hopefully not fatal)... because he is totally incompetent.