NEW YORK (AP) — Federal auto regulators have escalated a probe of Tesla after several of its cars crashed while using its self-driving feature, just as CEO Elon Musk prepares to roll out a new model with no steering wheel or pedals. The National Highway Traffic Safety Administration said in a memo that it was examining nine crashes where the self-driving software failed to quickly alert drivers to take control in fog and other poor conditions because the vehicle’s cameras weren’t picking out