Musk tweets Tesla self-driving rollout could take a couple of months; stock falls

FILE PHOTO: The TESLA logo is seen outside a dealership in the Brooklyn borough of New York City, U.S., April 26, 2021. REUTERS/Shannon Stapleton

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(Reuters) - Tesla Inc's top boss Elon Musk said Tesla is tweaking its self-driving software to eliminate a phantom braking problem and may release a significantly improved version within the next two to three weeks.