A Mirai is much bigger car than a Model 3. The better comparison would be the Model S, which has almost identical dimensions to the Mirai; when you do that comp

A Mirai is much bigger car than a Model 3. The better comparison would be the Model S, which has almost identical dimensions to the Mirai; when you do that comparison, the Mirai is around 300kg lighter and goes further. It doesn't matter which way you cut it, even with all of its disadvantages, hydrogen with a tank still has 3-5 times the energy density of lithium ion, and it scales better with larger vehicles. This is also the reason why industrial drones are moving to hydrogen. They've been using batteries for more than a decade now, and it's been the big limitation holding back a number of applications. Hydrogen gets you double-to-triple the endurance, even at relatively low pressurizations, which makes things like surveying easier, and delivery services possible. Military-grade platforms are supposedly already looking into using liquid hydrogen, with a number of platforms having already been converted over the past decade.