[ZirconEncrustedTweezers]

I dunno... because the closed cars are heavier? And in some cases driven by guys who will TRY to hit you?

And side-by-side running in IndyCar mostly happens on ovals, although in those cars there’s a lot more chance of going airborne if they lock wheels. She spent very little time running side-by-side with anyone in IndyCar on road courses, unless she was being lapped. I was actually a bit surprised that she had such a hard time with road courses given that they were all she ran on in her Toyota Atlantic days...

[GeronL]

And in some cases driven by guys who will TRY to hit you?

Danica has admitted to doing that and was not punished by NASCAR

[Alaska Wolf]

Racing side-by-side at 220+ mph on any track requires extreme concentration and reflexes. Chances of being seriously injured or killed in a collision is much higher in open wheel race cars than enclosed race cars. There have been few drivers that have been successful in both venues. Montoya has had his difficulties adjusting to cup racing. Stewart has pretty much devoted his time and skills entirely to cup racing.

All drivers are going to have to adjust to the new car designs this year. I just hope there isn't major mishap that wipes out 1/3 of the field.