Farm trucks are a perfect case for electrification. You install solar panels at the farmhouse and the thing is sitting there with a full charge every time you go to use it without ever making you drive 100 miles away to buy fuel. Farmers often have a commercial driver's license or drive on private roads where one isn't necessary, so the thing can be big and heavy and have enough capacity to run whatever equipment you may need to run in the middle of a field.
But the point isn't about farmers in particular, it's anyone who lives in a rural or suburban area without enough density for mass transit. Plumbers and real estate agents in those areas are not going to find a bus there to take. And there are a lot of those.