Originally Posted by StackTrack

The short answer is: no, in general, you are not covered

The long answer is, it depends...

You should assume that your street policy will not cover damage to your car while you're on track since almost all insurers now have wording in their policies that specifically (if not explicitly) exclude coverage while on a racing surface (wording may vary.) However, some states' insurance laws do not allow these exclusions (NC is one). However, even if your state is one of these, chances are good that if you have to file a claim, even if they pay it, they can still drop your coverage immediately afterwards.

SO... what to do?

Depending on the event, you can purchase per-event insurance coverage from providers like Lockton-Affinity for DE style events (events have to be "vetted" by Lockton-Affinity to qualify.) More info here: HPDE Insurance Program

There are others, but this is the one geared more towards first-time attendees and drivers who track expensive, daily-driven street cars that generally aren't paid for yet.