Why Lucid Stock Jumped 14% in August but Is Falling Back Key PointsLucid has the backing of a large shareholder and continues to receive funding from it.That sets the pace for the EV maker to start production of its Gravity SUV.Lucid's CEO believes the Gravity model could double the company's sales.============The luxury EV maker is all set to start production of its much-awaited SUV. Investors ..