NEVER OFFERED IN STORES This set could only be obtained through a promotion held by Mattel valid between 1 November 2002 and 31 December 2003; to obtain the set, one had to obtain all 35 Highway 35 World Race cars. To obtain the set, participants had to mail in the 35 UPC codes for all 35 cars and a 35 card featuring the participant's name, address, date of birth and phone number. Hot Wheels Highway 35 Mail-in Ultimate box Track Set SEALED in Blue shrink wrap as sent by Hot Wheels and never opened or removed; #B2850-9564. This set was not intended to be sold in retail stores, although a suggested retail price was put on it. ONE OF A KIND SET !! As per the HotWheels.FanDom page...... "The Ultimate Track Set is an extremely large motorized track set introduced as a tie-in with the Highway 35 World Race series. The set was themed to the various areas shown in the television series and featured multi-colored pieces of track and numerous different stunts including a volcano, an invert, a loop and two specialized high-powered boosters. Many of these stunts pieces were taken from existing Hot Wheels sets but re-themed to fit the series; the four-way booster and its associated loop were taken from Octoblast, the invert taken from the Wild Wave Stunt Set and the volcano section and its associated booster were taken from Volcano Blowout. The spiral appears to be the only part that is unique to this set. 8 "D"-sized batteries were required to power the set's two boosters. The set included a Sling Shot and Power Pistons with exclusive tampos." Single owner collection from the largest toy collector on the West Coast.

Brand New !! Factory Sealed !! Great piece from an amazing collection.