Every six months or so, Nvidia’s head of automotive, Xinzhou Wu, invites CEO Jensen Huang to go for a ride in a vehicle equipped with the company’s hands-free autonomous driving system. But only when Wu has “good confidence” in the system’s driving capabilities. Recently, the two went for a drive from Woodside, California, to downtown San Francisco in a Mercedes CLA sedan with MB.Drive Assist Pro, a hands-free driver-assist system partly designed by Nvidia that’s similar to Tesla’s Full Self-