d.c.1

i recently bought a Sony MZ-N707 Minidisc player which i'll be using in my car. my question is, will the player, or the minidiscs themselves, be damaged if i leave them in the car on a hot summer day (repeatedly)? i store my discs in a nylon case, and the player in another nylon case in my center console. they won't be hit by direct sunlight but i expect the hardware to get really really hot as temperatures in a hot car during the summer can reach way above 100 degrees. anybody have any idea? any experience with this? thanks.