No, like a car is coming towards you. See 0:52, someone (might have been me, can't remember) yells "car up!" At 1:00, a silver sedan goes by. Riders also need to call out slower riders or runners/walkers.
If there's a car behind you, the shout is "car back!" Riders at the back of the group have the responsibility to look back occasionally and call out any cars back. And everyone should repeat it up the line so riders at the front hear it.