8 Never-Seen-Before Toyota Concepts That Should Have Stayed Hidden Published on December 4, 2023 in News by Guillaume Rivard Photo: Toyota The 1970s was the decade of discovery and research. The initial years at CALTY were used primarily for conducting research on future trends in design. One such project was a proposal for an off-road vehicle based on the Toyota Land Cruiser. CALTY even went so far as to build a one-fifth scale model that was shown to executives from TMC for review. They were not impressed.