Inspired by a comment in Machine Elf’s thread about propane powered vehicles in GQ(sorry for not linking, those are difficult for me).
Locally for me, many of the public transit busses(but not all) are powered by propane and one of the sanitation companies has many of their trucks running on natural gas, enough of them to partner with a convenience store to provide a public fuel station out from their private “home” fuel station.
What do the local truck/bus dependant services do where you are?
Around here the trendy thing with city buses is hybrid diesel electrics. I don’t think any are propane powered. The only vehicles I’ve seen that routinely used propane were taxis. Now that hybrid cars are widely available I’m not sure if they still do. Perhaps not, because I’ve noticed that in the city proper, propane filling stations have been disappearing.
The garbage trucks and city busses in Mesa (and Phoenix, and probably others) are CNC or LP. The school buses are also some propane or propane-like gas.
The school district I used to drive buses for had a mixed fleet. The small Type 2 buses (10-15 passengers) were gasoline powered. They had 3 full size Type 1 CNG (Compressed Natural Gas) buses. Typically, you would have to refuel the CNG buses every 3 days at the city corporation yard.
While I was refilling, I noticed the city garbage trucks and fleet vehicles also ran on CNG. I guess the economics worked out best with CNG as opposed to propane.