Number-two ride-sharer Lyft and automotive OEM Aptiv (formerly Delphi) have announced that their 20-car fleet of self-driving taxis have now served 5,000 trips in Las Vegas since January. It comes ahead of Waymo’s plan to start charging fees for its service in Arizona. When viewed in combination, these trials could create the consumer and political trust needed to bring fully autonomous services to market. Without such trust or buy-in, the likes of Aptiv and Waymo will struggle to find customers for their technologies. If, for example, a deadly school-bus crash was blamed on a self-driving car, a politician might seize that as a chance to push an agenda, playing on the tragedy to outlaw such cars on public roads. That…