From the NASCAR.com website:
For general comments, suggestions, and inquiries about NASCAR, please send an email to fanfeedback@nascar.com.
And the automated response.....
“First and foremost, we want to thank you for your interest in NASCAR. You can be assured that we take your feedback seriously. Everyone at NASCAR understands that the success of our sport depends on the support of the fans.
We read every e-mail we receive from our fans and respond to as many as possible. Thanks again, and we hope you enjoy the rest of the season.”