You can check with the North Carolina state statutes, especially Chapter 20, Article 9, to see if it specifically states that proof of insurance must be on your person at all times while driving or not.

Even if the state statute does not expressly state that the insurance card must be in a vehicle with a person while they are driving, it is always advisable to carry the car's insurance card with the vehicle in case a law enforcement officer requests proof of insurance or if you must provide this insurance information to others after being in an accident.

For more NC insurance laws questions try contacting the North Carolina Department of Insurance.