When we were kids, my dad drove us down from PA to Florida to go to Disney World. Anyway, that meant two days on the road - PA->SC->Orlando and then back later, and eating fast food along the way (a huge treat). Anyway, we all got milkshakes one time, and, of course, left the cups in the bins in the back of the station wagon, where they then proceeded to COOK in the sun when the car sat in the Disney hotel parking lot Wow - did that stink when we got to the car (a few days later as we were staying at the Disney Contemporary hotel). I blame my dad for not checking behind his three kids