My friend hopped in a car and drove approx 1km to me. When he arrived I could not see or hear him in the car. He got out of the car and I could see and hear him again.

See video here: https://youtu.be/PJbhDFEdvls

This has also happened previously but with a passenger. When the car arrived I could not see the passenger in the front seat but I could see the driver.