I'll throw out some tidbits and thoughts for you - In my past life I was an automotive engineer and have some familiarity on plastics processes. -If you are talking about some molds, It would take someone with CAD experience to sit down and spend time on designing a functional mold. It would be made out of some kind of tool steel. - Lots of bucks. -- High 5 figures, maybe low 6 - Then the above mould would require a large press sized for the mold - more bucks. - If you were going to do body panels with a fiberglass impegnated resign, there is a style of that material used called "sheet molding compound: or SMC. It a big square of material to what ever size you would want, say the size of a top of a desk. You would set this flat sheet into a female mold and then mate up the male mold to it. Again it takes a big ass press to apply heat and pressure. - Plastic and paper garbage such as bottles, newpapers and other stuff are sold from the recyling centers to plastics vendors and they in turn sell that to big plastics makers. The major raw plastic makers in turn then add the recycle scrap to virgin plastic. So this blended raw material ends up in lots and lots of consumer products. (We bought a lot of it to use in auto instrument panels.) - In a utopia world, there would be enough recyled plastic material to use for all the new products that eveybody wants and needs. The fact is there just isnt enuff recycled plastic for all the new products that business want to make and people want to buy. So new raw plastic needs to be made. - Is this crazy? SMC is good for relatively simple curved shapes. Would it be good for a MC body panels? m'be - but I really doubt it would match the quality of OEM body panels. Fibreglas with recycled plastic bags and newpapers? That's probly not a good material for body stuff. (The aftermarket mc body panel industry is probly using some kind of spray lay up process I am not familiar with.) -(my experience is with product run in the tens of thousands.) ------Just my 2 cents, this is just stuff I picked up in working in production engineering (for way too long) -- Anybody else in the business , please chime in.