I'm somewhat of a fan of 70's and East European car designs, but it wasn't until I recently read Richard Scarry's book "Cars and Trucks and Things That Go" that I finally got inspired to "properly" model one (probably closer to Japanese and British than East European designs this time). This is not a "real" car design but one of my own (still not completely finished), but it's still got some of the actual 70's feel to it (albeit some of the aspects admittedly could be considered more modern).
Blender 2.79b and the Cycles engine were used, and everything was modeled "from scratch" this time (I didn't reuse old model parts). Rendering was initially done in 7680x4800 pixels, 4096 samples, but the resolution was reduced to 1920x1200 pixels later, and some color curve adjustments were done in GIMP afterwards to get to the result presented here.