My brother and I where at Canaveral jinxing another shuttle launch. When we where driving away I heard this noise coming from the dash board area. Sounded like static on an old transistor radio. Seems it was louder when I slowed down and stopped. My brother was crawling on the floor and under the dash trying to figure it out.
Who knew those dang back up cameras had microphones on them. Every time we slowed down the vehicle behind us got close enough that we could hear their engine.
Duh !