Bama , my restorer friend Bob has my worn out copie of How to restore your 57 Chevrolet by Harold Luisiana .In the rear of this book they list the assembly plants my Memorie could be off . I live about 10 miles away from the old GM assembly plant in Tarrytown NY. My friend who started working their in 1958 told me that they were making 500 cars a shift two shifts a day . That's 1,000 cars a day . Only the Oakland California plant was making more end of the year production totals than that , and not by many cars . Ancor Motors were hauling 9 cars on a trailer out of their every three min. X-2 one trailer going North and one going South . Thier were always two trailers three min . behind them . They were moving 1,000 cars a day out of the Tarrytown NY assemble plant . These were GMC tractors with big block Chevrolet gas engines , and standard transmissions .