I think that most people will only read the News Headline somewhere "Tesla Banned in New Jersey" and even thought they wont read into details. Other people will read into the details and get more information about the car. It could have the same effect that the Nike Air Jordans Ban in the NBA had on the Sala of those shoes. Tesla is a complete new technology and separates itself from traditional car manufacturers. The NBA Ban of the Nike Air Jordans is considered one of the most genius PR stunts in history, It had the message "unfair advantage for the wearer" So overall its of course bad that they banned Tesla, but Natinalwide that Ban will hype the car. Similar anecdote: The german food regulators found "cocaine trace" in RedbullCola, and issued a ban nationwide, the ban was released in the morning, by the evening most shops didnt got the notice but the customers did, all cans were sold out national wide just in a couple hours.