Self-driving platoons of trucks are coming to a highway near you

There’s a joke in the autonomous vehicle community right now: How do you know you’re in a self-driving car? There are two human drivers in the front. Many of the companies testing out self-driving cars in the US, like Uber, Waymo, and GM’s Cruise, have ridden with a safety driver behind the wheel, and an engineer in the passenger seat monitoring the car’s systems.