another one , did not happen to me but to one of my teachers , years ago there was this family that basically lived out of their dodge caravan ( lease vans , when they brought in the old one it would get parked next to the dumpster and literally shoveled out

) well the people were complaining that on cold mornings when they were heading up 390 , after about 20 or 30 miles they would hear this lod CCCCCCRRRRRRRRRRUUUUUUUUUUUNNNNNNNNNNNNCCCCHHHHH , everyday it was cold. so they brought it to the dealership , my teacher test drove it the next day ( some other idiot c tech parked it in the shop overnight

) so he drives it and hears nothing , well he realizes they did not replicate the condition. well the owner of the dealership is getting nervous because they have a loaner and he does not want it trashed. so he pays the three head guys overtime to take it out early the next morning. sure enough 20 or 30 miles in they hear the crunch , but cannot tell where it is coming from , it sounds like everywhere. so they stop for coffee ( really cold morning ) and head back out , one guy in each front seat and one in the very back. sure enough they hear the crunch , my teacher looks in the rearvies and just sees the feet of the guy in the very back seat ( laughing so hard he fell over ) it turns out that the crunch was made by a 2 liter bottle shoved under the center seat. in the cold it would suck itself in , then after 20 or 30 miles and warming up with the cars heat it would expand producing a very loud crunch. some people are just pure slobs