Thanks Paul
I have had an eye on XPS boards to use as a bike body building material for a long time.
XPS boards are sold in the UK as insulation board for underfloor heating and are availible in 6, 10, 20 or 30mm thickness.
I never thought to do the whole body from it, but why not.
I can see metal plates where the pedal bearings are located and around the head tube
But the most interesting is that this large velomobile weighs less than 30kg compared with the small celotape body velomobiles 34kg, which has a metal frame.
Mayby this is the way to go?
But how do you attach a python front end to a XPS rear body?
Back to the drawing board.