Complex sentence: The first written credentials about the phenomena (dated June 1980) are about a male hitchhiker who was picked up, but despite the driver's high rate of speed, after some time passed the person was no longer in the car.
Split into simpler sentences: The first written credentials about the phenomena (dated June 1980) are about a male hitchhiker who was picked up but. Despite the driver's high rate of speed, after some time passed the person was no longer in the car.