1. Light (30-50% than steel)
2. Stiff (no tik tok)
3. Cheap (as cheap as good)

This structure criteria is for electric car exterior body such as Hood, Doors, Trunks, fender, spoiler. this car will passion to reducing weight and increasing performance. And segmented for midle-low customer budget, hard to say  that the carbon fiber is not an option. Is there any body have a advice? example: biaxial fiber glass+lantorsoric+biaxial+vinyl ester.