Hydrogen plants are on order at least 8 from NEL. to fuel Budweiser trucks from their brewery along the interstates to their customers.
only need a small electrolyzer at the factory for testing.
as each customer commits they build more stations - or use other stations that already exist - such as PLUG Powers at Amazon and Walmart (plus many other ) Distribution centers which is where a lot of Budweiser or other trucks go.
Hydrogen is not the problem.
Also have contracts for other California locations besides the first 8 NEL ones.
Once the trucks are available the infrastructure will be there that was all part of the "one price" deal for each truck leased for 1m miles including fuel.