Citation: Daniel Konstanski, The Secret Life of LEGO Bricks: The Inside Story of a Design Icon (Unbound, 2022). — p. 32-33.

The pair of LEGO wheels were unleashed upon the market in 1962 at the Nuremberg Toy Fair, where they were heavily showcased.

One special young LEGO fan in particular was absolutely delighted with the new elements. Kjeld Kirk Kristiansen, Godtfred Kirk Christiansen’s son and future owner of the company, was already a car enthusiast by this point in his life. ... Using the new wheel element, he built his own large garage filled with all manner of sports cars, limousines and off-roaders. Kjeld Kirk Kristiansen dubbed his creation ‘LECA’, an amalgam of the LEGO word + ‘CAR’, and would put prices on each vehicle, noting if they were for sale, before showing them to his father.

One model was apparently good enough to close the deal as, in 1968, Kjeld Kirk Kristiansen’s rendition of a four-wheel-drive-style vehicle became set 330.

Kjeld loved cars and embraced the new wheels when they debuted in 1962. One of his designs became an official LEGO set in 1968, #330 Jeep.