Of the 3 race Datsuns the owner has, he says "This one scares me!" Now that has to be some impressive power to weight ratio!
I finally found someone who knows what this unusual radio design is all about, the 2 sections of clear plastic(or glass) are a single unit and when pressed down switch the channel to the next preselected channel. The left hand display is tone and volume, the right hand side is tuning.