Pyrex

First stop is ""The Magic City,"" Charleroi, Pennsylvania, home to the Pyrex plant. Plant manager ""Jack"" Jackson gives John the scoop about the invention of the sturdy glassware before taking him on a tour. Then quality assurance associate Edna Maxson shows John how measuring cups are cooled on the last stop on the assembly line, the thermal downshock. Later, he meets with collector Mary Jane Martucci. Next stop is Auburn, Massachusetts, where Wolf Coach mass produces vehicles for the military, police and TV news. John talks with Vice President Richard Wolf... who can't talk about most of the vehicles. Captain John Welch, of the Norfolk County Sheriff's Department, shows John the inside of their command unit. And engineer Steve Spinney details how he helped design a vehicle that scans cargo for contraband. Finally, John gives a history lesson on Hostess Twinkies, and we hear from Lewis Browning, who is a self-proclaimed Twinkie gourmet.