I have owned an MZ-R50 for about four months and along with that a '98 Ford Ranger for about two weeks... My portable Minidisc recorder was hooked up to my stereo system in my truck by means of one of those "tape adapters." I played it everywhere I went. Well, one night it was dark, rainy, cold, yucky, etc. I was driving home from work and had to make a left turn onto a major highway. A "historic marker sign" blocked my view of a set of car lights that I should have seen, but it was too late. The truck was totaled out completely with most of the damage on the driver's side door. However, I could still hear the music playing on loud and proud without a single skip from my Minidisc player, which was thrown behind the passenger seat.
A second, and quite similar occurrence happened not just three months after that, with another car. Someone else had run a red light and forced me to wreck yet another car, but that damn MD deck just wouldn't stop playing my music!