Here is a link to a youtube video that shows that people don't understand Nascar any better than they do cycling.
 I apoligize for not being more clear about this video. This is a video of the Onion News Network, a fake news service. This video is a parody of an interview with a Nascar Driver's coach. The point made in the video is that in Nascar, the only skill required is to go fast, and turn left.
I posted this video because this shows the general population's understanding of Nascar is very similar to their understanding of bicycle racing.