More than two years after touting plans to turn Tesla Inc. vehicles into robotaxis that have yet to materialize, Elon Musk held another highly technical event about autonomous driving development.

Tesla Inc. managed to stay profitable even in the midst of a global pandemic, but something is still nagging at Elon Musk: the electric-car maker isn’t growing fast enough.

Tesla Inc. delivered a second straight quarter of blowout earnings and speedy execution, extending an unprecedented surge for its heavily shorted stock.