https://cleantechnica.com/2023/05/23/the-pathways-to-biofuels-a-survey-of-why-we-should-stop-fretting/

Biodiesel has failed because it can't be cheaper than fossil fuels when we are allowed to use that atmosphere as an open sewer. That's changing.

And to be clear, per the IEA's most recent renewables update, the world is manufacturing 70 million tons of biodiesel today, we're mostly just wasting it in ground transportation.

https://cleantechnica.com/2023/06/06/what-does-the-iea-2023-renewables-update-tell-us-we-should-pay-attention-to/