Texas Alternative Fuel Vehicles (AFV)

There is an increase in Texas of vehicles using alternative fuels instead of just traditional gasoline and diesel.  Here is a resource from UT Austin:

https://parking.utexas.edu/fleet/fuels/alternative

From that resource is this wording:

Biodiesel has been in use by the university since September 2001. B20 is composed of 80% standard petroleum diesel and 20% biodiesel. Biodiesel is made from renewable feedstock, such as vegetable oils and animal fats, through a simple refining process.

Advantages

B20 can be stored and dispensed in exactly the same manner as 100% petroleum-based diesel fuel. Additionally, diesel-powered vehicles require no modification at all to run on B20. Thus any diesel-powered vehicle is, potentially, already an alternative-fueled vehicle. Since biodiesel is not a fossil fuel, it can cut greenhouse-gas emissions as well as ordinary pollutants (particularly soot) by displacing petroleum-based fuel. Because it requires no changes in hardware (vehicle or refueling) or retraining of mechanics and users, some studies have shown that it could be the most cost-effective way to meet clean-air requirements.

Disadvantages

The main disadvantage of B20 is fuel cost. It generally cost more for biodiesel than for 100% petroleum-based diesel fuel. There are also concerns about cold weather performance. If the B20 has not been properly processed and/or properly blended it can congeal and clog fuel filters creating additional maintenance costs.

Here is a starting resource for those interested in businesses pertaining to biodiesel:  Biodiesel Magazine