Again, I still believe open cockpit openwheel cars should be banned. They make an already dangerous sport even more dangerous needlessly. Its kind of silly that in this modern age Dario Franchitti can run into the back of another going just 20mph faster, get launched into the air because of openwheels and into a fence and have his career ended along with injuries to several fans.
The cars need to be totally revamped. No open wheels, completely closed LMP style cockpit with two quick release doors on either side for a fast exit. And if there is a fire a button which activates an extinguisher, which can also be activated remotely if the driver is unconscious.
The extra challenge of racing openwheel opencockpit cars is not worth a single life or limb.