David Bui of the Bay Area went back to Vietnam to search for his father's gravesite. Bui's father died in combat during the Vietnam War more than five decades ago.

Many Vietnamese Americans have made a special trip back to their homeland recently. For some, it's a homecoming and a heartfelt trip that often unpacks a lot of history and emotions. David Bui of the ...

While all that sounds very tentative, it boils down to this: Waymo has the self-driving tech, and Toyota has the cars.