It was ambiguous to me too, stylistically. I don't know if Vic had any sort of popular affinity or affiliation with cars, so I construed it as referring to Bri

It was ambiguous to me too, stylistically. I don't know if Vic had any sort of popular affinity or affiliation with cars, so I construed it as referring to Brin and Google's pet self-driving vehicle projects (his cars), after having said "Google+ was a mistake" (heh, oops).