I'm doing a phd in chemistry http://ghettotube.in.net ghettotube Using some clues from Musk, Gardi determined that each Hyperloop car would be roughly the same size and weight as a family car. He extrapolated from this the maximum weight the HyperloopâÂÂs main structure could support. Gardi concludes that because a high-speed rail car would be nearly 20 times heavier, the construction of the Hyperloop would be cheaper and the components would be stronger.