(Photo: AFP)

More than a dozen Tesla executives led by Musk discussed everything from a white-paper plan for the globe to embrace sustainable energy to the company's innovation in managing its operations from manufacturing to service. 

But there were no details about when next generation cars would be launched and what models would be offered. 

Musk had been expected to lay out a plan to make a more-affordable electric vehicle (EV) that would broaden his brand's appeal and fend off competition.

Tesla cut prices in recent months to boost sales, which were pressured by a weak economy and growing threats from rivals in the United States and China. 

Tesla will also have to improve its battery technology, which Musk has called the "fundamental limiting factor" for the transition to sustainable energy and more affordable cars.