Only Ferrari owners are admitted to the factory tour, which can be arranged at least a month in advance through your local dealer. English tours occur twice weekly - unless a secret design project is in the works. "Our tour is the best selling tool we have," says Richard Sherbert, director of the Ferrari Business Unit in Englewood Cliffs, New Jersey. "Everyone is especially impressed [with] how clean the factory is, how advanced the technology is, and how polite people there are." Set up your tour through your Ferrari dealer. A nominal fee is charged to enter the Galleria Ferrari, the Ferrari Museum in Maranello, Italy. For more information on the museum, call 011-39-0536-943204.

At the Jaguar factory, everything from wood trimming to wiring an engine installation can be toured by pre-booking through the Coventry, England, office. For more information, contact Jaguar Cars North America, 555 MacArthur Blvd., Mahwah, NJ 07430, (800) 4-JAGUAR, or Valerie King, Tour Administrator, Jaguar Cars Ltd., Browns Lane, Coventry, England, 011-44-2476-202058, Email The three-hour tour begins with a visit to the Jaguar Daimler Heritage Trust Museum and a 15-minute historical video. English-language tours are held once to twice daily.

The factory in Sindelfingen is open to all at no cost. The tour can be arranged in advance with stateside dealers, and production is followed from beginning to end.

A tour of the factory and Saab Automobile Museum in Trollhattan, Sweden, is available by appointment only, for those ages 12 and over. Call 011-46-520-84344.