The Mirai has been around for a few years. It is lease only in CA and includes $15,000 in fuel credit for 3 years, which is a good thing because it costs $5,000/yr to drive it 12,000 miles. About the same as one of those monster diesel pick up trucks.
Toyota will provide a loaner car if you need to take a trip outside CA or go where hydrogen isn’t available. The hydrogen is mostly made from fossil fuels too. Sound appealing so far?
Our friends have one. Because of the recent hydrogen shortage, Toyota gave them a loaner and will be making their next 6 monthly payments.