"Tri-ang"). The popularity of Scalextric continued. In 1960, plastic bodies replaced the original tinplate, and in 1961, production moved to a new factory in the Leigh Park area of Havant. By 1964, Scalextric was being advertised as 'the most complete model motor racing system in the world'. Production of Scalextric was transferred to Rovex in 1968 (although the Minimodels factory remained open until the early 1970s). It is now owned by Hornby Hobbies of England. Products The first model Francis introduced in his Scalex line of tin-plate clockwork cars was the Jaguar XK120. These 1:32 scale models had some unique features, including a clockwork motor which was not wound by a key but by a 'fifth wheel' device. This wheel is found under the chassis behind the front axle, and works by pressing the car down on a hard surface and being pulled backwards. This wound the clockwork motor and when the car was released it shot forward at speed. The Scalex range expanded to include six cars: the MG TF, Austin-Healey 100, Aston Martin DB2, Jaguar 2.4 Saloon, Maserati 250F and Ferrari 375. The last two were in a slightly different 1:28 scale. Scalex was very successful: at one point the company was producing up to 7,000 cars a week. Later cars also featured a steerable front axle which could be set at an angle and the cars would then run in an arc. Most Scalextric models are 1:32 scale, though between 1968 and 1970 Super 124 cars and track were manufactured at 1:24 scale. In 1994 Micro Scalextric at 1:64 scale was introduced. Cars and track are not compatible between scales. At the beginning of the 21st century, Scalextric track underwent a major redesign to make it easier to assemble. The new design is known as Scalextric Sport and can be connected to the original track using special adaptor pieces. The new track was designed to be compatible with all earlier 1:32 cars. Many other manufacturers, including the likes of Fly, Slot.it, SCX, Airfix/MRRC, Carrera and Ninco, produce cars that can run on Scalextric track with minor or no modification. In 2004 "Scalextric Sport Digital" (SSD) was introduced, which allows up to four digital cars to be raced in a single slot. The cars can change from one slot to another using special slot-lane change tracks, the lane change or otherwise being controlled by a button on the