If they had plans to invest in hydrogen infrastructure on the scale needed to make hydrogen cars viable, they would have made an announcement about it. There are over 100,00 gas stations in the US. To make hydrogen vehicles viable toyota would need to be investing in hydrogen infrastructure at that scale. And they would be building these stations alone. No other company is investing in hydrogen infrastructure. Shell is pulling out of the hydrogen fuel station market entirely, and even so there are only stations in two states specifically because of government incentives.

Hydrogen cars are going nowhere. Toyota's continued fluff about the Mirai is PR to distract from the fact that Toyota is doing everything they can to avoid making zero emission cars.