The best part is that material costs are often some of the lowest costs in making a product. Think about how much more metal and plastic is actually in an SUV compared to a small car. Yea the envelope is bigger but it’s mostly air, and those engines aren’t actually that much bigger. SUVs do not cost more in advertising, employee payroll, safety testing, or R&D and yet will cost 50-100% more than a smaller vehicle because “reasons”. And people will buy them also because “reasons”.