This is a dumb question, but that Martin Mars looks brand new inside. What kind of material do they use to line the interior ? It looks like aluminum sprayed with shiny white paint, but I'm sure its something different.

Thanks for the responses !

My son just finished writing his glider exam for gliding school in Air Cadets. He got the highest mark in the province. He really wants to go to the gliding school next summer and the next step is the interview. He soloed in a 150 3 days after his 14'th birthday. he is 15 now. Question is, should he...