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You'd be able to design cars of Cd 0.10 with his data.
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Given sufficient frontal area, you could even use a RAV4 as the donor vehicle.
My parents had a vacuum-form machine like the one you describe, with a capacity of 1 1/2x2ft. It had a heating bed on one side, and a vacuum bed on the other, of a piano hinge. One could probably fabricobble one with infrared heat lamps and a shopvac.
tip: Heat the sheet vertically, instead of swinging it 180°.