I don't understand what problems the Hyundai 74 is trying to solve. It has roughly the same stats as a long range model 3 for acceleration and range, but has to

I don't understand what problems the Hyundai 74 is trying to solve. It has roughly the same stats as a long range model 3 for acceleration and range, but has to carry around both a fuel cell and a 60+ kwh battery (nearly as large as the model 3's). Hydrogen mpge is already terrible (all hydrogen mirai has 75 compared to long range model 3 at 130), and an extra step here is only going to make it worse. Is there something I'm misunderstanding about the vehicle's platform?