Coinspeaker TSLA Stock Down 0.49%, Tesla ‘Full Self-Driving’ to Cost Extra $1,000 Starting July, Elon Musk SaysTesla (TSLA) stock went down as it has become known that a full self-driving feature will add an extra $1,000 to the car prices. TSLA is 0.49% down.TSLA Stock Down 0.49%, Tesla ‘Full Self-Driving’ to Cost Extra $1,000 Starting July, Elon Musk Says