An interesting thing I've read re: passenger car weights is that even though there are continuous gains in weight reduction (for eg by using composites), the ov

An interesting thing I've read re: passenger car weights is that even though there are continuous gains in weight reduction (for eg by using composites), the overall weight has stayed the same/gone up for decades due to more safety devices/crash zones etc. It appears to be the hardware equivalent of Wirth's/Bill's law (https://en.wikipedia.org/wiki/Wirth%27s_law https://en.wikipedia.org/wiki/Wirth%27s_law).