Camelina has emerged as the crop feedstock of choice for renewable propane
https://susoils.com/
https://www.reuters.com/business/autos-transportation/us-allow-california-require-half-all-trucks-be-electric-by-2035-nyt-2023-03-31/
As an alternative to gasoline and diesel, propane vehicles produce less greenhouse gases and harmful air pollutants. Thirty billion gallons of propane are produced domestically in the United States, with 20 billion gallons being exported each year. Its price is not subject to shocks connected to global supply and demand. This results in more stable prices over the long run, among other operational benefits. Therefore, propane vehicle operators can secure long-term fuel contracts at fixed costs.
https://www.cummins.com/news/2023/02/13/what-markets-and-commercial-vehicle-applications-are-well-suited-propane
https://finance.yahoo.com/news/us-power-plant-firm-goes-215927545.html