Self driving cars just arent ready yet. But imagine no drunk drivers, no lorry drivers crashing because of fatigue etc. I see it more like the automation of “tellers” at banks - yes, a person can do it, but automating it makes it cheaper and therefore more accessible. There aren’t that many tube stations in rural Cornwall or Bangladesh. Hydrogen isn’t useful for domestic cars where we have reliable power distribution infrastructure and the car sits idle for 15 hours every night. But if you run a fleet of (self driving?) industrial vehicles in the Australian outback, or lorries travelling long distances to provide food and medicine to remote communities hydrogen is a way to provide quickly refillable fuel with a high enough energy density to make it viable - and it can be generated locally. Hydrogen can also be used to replace natural gas for the type of highly temperature sensitive industrial processes that product pharmaceuticals. AR is already being used by industry to assist surgeons through complex surgery from the other side of the world, support remote safety inspections of vessels while they’re still at sea, coach engineers in remote locations through fixing broken systems without needing to fly in expert, and simulate emergency response training for hazardous situations. These things are making a difference. Just not in your living room.