Now that I have identified the objectives, let me explain how I hope to achieve them. - your thoughts are welcome!
initially I have purchased a Honda C90 cub, with a view toward using the engine/gearbox and registration particulars.
I have started fabrication of a tubular spaceframe "chassis" which allows the driver to sit low down between the wheels with the same driving posture as a sports car.
I'll post some images because there's too much to explain
But my aim is for 0.60msq frontal area, a cd of 0.17 and with 10hp I think 100mph should be possible
Here is donor vehicle shot and next post will be fabrication images