I see a work-around through even the most draconian North Carolina law. On the Teslamotors.com site, simply say, "North Carolina residents, please call 800-4A-TESLA, and a concierge representative will help you through the purchase and delivery process. Unfortunately, by North Carolina law, we cannot process orders or requests made online."
If the NCADA wants to be especially douchebaggy, they could claim that even phone transactions would be a violation of the law, since many calls are made by digital VOIP means, making even voice calls "by internet." If they were to go that far, I expect there would be major blow-back, and would almost certainly trigger a federal lawsuit by Tesla on obstruction of interstate commerce.
If the NCADA wants to be especially douchebaggy, they could claim that even phone transactions would be a violation of the law, since many calls are made by digital VOIP means, making even voice calls "by internet." If they were to go that far, I expect there would be major blow-back, and would almost certainly trigger a federal lawsuit by Tesla on obstruction of interstate commerce.