Tesla’s profit engine is sputtering. Elon Musk has bet its future on a promise he’s far from delivering

By Chris Isidore, CNN (CNN) — Tesla’s robotaxi service has been mostly hypothetical so far, but it’s certainly taking the company’s shareholders for a real ride. Tesla debuted its ride-hailing service using cars with its so-called full self-driving (FSD) tech in Austin, Texas, in June. At the rollout, CEO Elon Musk announced the ambitious goal