Helmet radios are quite useful when trying to keep track of a dozen motorcycles and a chase truck, but a little effort has to be made to make sure they are all working together.
When gold and silver mines were active around Boreas Pass, long before the age of big trucks, a railroad was put in to carry the ore, and the steam engines needed a lot of water.
Mount Evans was the highest we went. I can't think of any other country where one can ride a paved road up to 14,130 feet.

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