Tesla will stop selling its $8,000 Full Self-Driving (FSD) option and make it strictly a monthly subscription service after February 14, CEO Elon Musk announced on his X platform. Musk didn't reveal the price or why he's making the switch, though FSD is already available by subscription for $99 per month or $999 per year.The shift could be advantageous for buyers, particularly if they decide to dump their new Tesla or trade it in. It will also allow prospective owners to hedge their bets, as Tesla has overpromised on the feature since it was first announced.