In the latest development in the ongoing custody dispute between Tesla Inc. CEO Elon Musk and Grimes, the pair were seen in a Texas court on Friday. This follows allegations from Grimes’ mother that Musk is “withholding” their children. What Happened: Musk and Grimes attended a hearing in Austin, Texas, concerning their ongoing custody dispute over their three children, reported Business Insider. The former couple has been in this battle since September. Both parties have filed separate lawsuits in Texas and California. Friday’s hearing addressed several motions, including one to temporarily s…