While Kyle could be more kind that would just cater to the stupid. Anyone that is on Twitter or Facebook also knows about Google. Need I say more? When people at work ask me a question like "do you have the phone number for X-company" I say "Is your Google broken?" It took them longer to walk over to me than it would have to Google the phone number.
You also have to factor in the fame element. If Kyle Petty answers their question that is their 15 seconds of fame. It is STILL a STUPID question that could be easily answered on Google, but people get warm and fuzzy when someone on TV answers the question.
The thing I don't get though, is why the TV shows pick such stupid questions. Maybe it is Kyle just wanting to mess with them. I don't know. But I do know there are lots and lots and lots of stupid people out there that can't figure out simple answers on their own.
I would have asked something like "How did Carl's team get the right front camber wrong on the most important race of his career?"