I know i know don't leave your racquet in the car. I've heard it a thousand times, but I didn't want to take it in to work today. Got out my racquet today and lo-and-behold my fresh set of strings that has maybe 4 hours on them is snapped. Tension was fairly high at 60. It should be noted that the strings in this racquet were TNT 17 and this was my first time ever stringing a racquet. I've left racquets in the car before with no ill effects. Not sure what to think.