OAKLAND, Calif. — OpenAI’s president Greg Brockman detailed a wild meeting in 2017 with Elon Musk in which the co-founders tussled over ownership stakes in the company – at one point claiming that he feared Musk “was going to physically attack me.” Testifying on Tuesday in the second week of the bombshell trial over the future of OpenAI , Brockman claimed Musk showed up to meet him along with other OpenAI top brass to negotiate their equity stakes in the for profit company that would eventually launch ChatGPT. In the middle of talks, Brockman said Musk personally gifted free Teslas to him, Ilya Sutskever and others — a move Brockman saw as Musk “buttering us up” and to make the co-founders feel “indebted to him in some way.” Likewise, Sutskever had given Musk a painting of a Tesla car, Brockman said. OpenAI President Greg Brockman testified in Oakland federal court.…