I was surfing the internet and looking for another alternative fuel that was like biodiesel but for gasoline cars, In which case I found a Wikipedia article talking about biogasoline! There's also an article about biodiesel. Now let's go over some differences and likenesses:

Biodiesel can be made in a kitchen as shown in Mission Unstoppable. You can use animal fats or vegetable oil as an ingredient. Biogasoline, on the other hand, can be made using sugar canes, beets, and other kinds of plants.
Another difference is that diesel trucks can be refueled with biodiesel and gasoline cars can be refueled with biogasoline.
According to Wikipedia however, both biodiesel and biogasoline can be made using algae. If you work at a pool cleaning service and you know how to clean a swimming pool with algae in it, I'm pretty sure you can take a sample of the algae that you are working with and bring it to a scientist (a chemist) who knows how to make sustainable fuels.

Click here to read more about biodiesel.

Click here to read more about biogasoline.