The 1977 Toyota Cal-1 was a pick-up concept previewing the first-generation Celica Supra, designed at Calty, Toyota’s California design studio. The rear decking opened into a pair of rear rumble seats with the rear window flipping up to create a wind deflector for the rear passengers. It was presented at the 22nd Tokyo Motor Show and then at the 1978 Chicago Auto Show.
Source: carsthatnevermadeitetc
Images: www.chicagoautoshow.com; Stepho’s Toyota Site; motor.ru