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Y'all haven't driven the Coquihalla lately have you?" Chris is right - the only vehicles I have seen overheating in the past number of years are on the long uphills on the Coq. You usually see one each trip and it usually appears to be someone from the LM who has not maintained their vehicle properly and after years of puttering around VCR, decides to drive it to Kelowna or Kamloops over the Coq. That'll do 'er!!
Same with tires in the winter - many go without snow tires in the LM, then do one trip over the Coq - oh, oh, trouble.