Just at the request of the Bavarians, the Magna Steyr company developed an amazing thermos. Work on it began back in 2000, and now the design is ripe for mass production. And that means that it meets all the requirements of strength, safety and durability presented to serial cars.
So, the container holds 9.5 kg of liquid hydrogen and stores it at a temperature of minus 253 ° C, which is only 20 ° above absolute zero. Between the inserted into each other cylinders of special, so-called austenitic stainless steel, not so much cosmic cold reigns as cosmic vacuum. The air is evacuated to a pressure of 10–9 bar! An additional multilayer thermal insulation of the inner tank was also used. As a result, hydrogen is stored practically without evaporation for two whole weeks, and then if it evaporates through a special valve, it is not faster than one percent of the mass per day.