any object, other than a coin, which is of prehistoric date, and any part of which is gold or silver. from the 1880s until well into the 1950s, virtually all long-distance transportation of united states mail was performed by the railroads. otherwise it just sort of drifted in between smells. the average temperature for the year in turbo is 81.0 °f (27.2 °c). fifteen thousand fans would see an event that would last for two hours and forty-eight minutes. the rally ended in 1986 because of environmental concerns. it remained there for twenty-two more years. 