A change in the temperature We had been driving late into the night and decided to pull over at a random place to get a few hours rest on the way to Yosemite National Park. The following morning we learnt 3 important facts...  1.We had slept at Lake Tahoe, a very beautiful place 2.The hotels of Lake Tahoe do not offer showers to people who have slept in their cars 3.At 4am we had to switch the engine and heater on as we thought we were going to die of hypert...