Those that can directly replace petrol or diesel in conventional combustion engines have been touted as a sustainable alternative to fossil fuels, with fuels derived from food waste cutting greenhouse gases by up to 94%.
Someone explain to me how burning vegetable oil instead of diesel can have as low as 6% the amount of greenhouse gas emissions. I find it hard to believe breaking a hydrocarbon doesn’t release that much carbon dioxide.
I admit I’m not the most chemistry-literate - so correct me if I’m wrong here - but since “Road Haulage” already has battery-powered vehicles starting to roll out, it seems a better direction to work towards than still burning things. This might be useful as a mid-way step if existing vehicles can use it, but only if it appears on the market (and makes significant market penetration) relatively soon.
Aviation is also mentioned, which (to me) is a bigger deal here. The only viable alternative to burning jet fuel is to get from A to B much, much more slowly. Which is great and something we should be doing! But realistically…not gonna happen anytime soon.