Marijuana would be a great crop to use for Ethanol. It's fast growing, and Highly renewable. Also any plant waste material can be used for Ethanol making, and the flowers used for the medical business. Win Win There.
But there's all kinds of energy, and has been for years. However, the elites want us to keep buying their oil, Ethanol, or other energy they come up with. Tesla invented free distribution of electricity, but the powers that be didn't want it that way. It works that way with everything.
Batteries would be much cheaper and better quality for the avg consumer, but they remain expensive so it's hard to build any electric vehicles without spending lots of money. Chevron also bought the patents for Large-Size Nickel Metal Hydride batteries, because their interest is in you burning their fuel for $$$, not using cheap and available electricity.
***If better and more affordable Batteries were more available, I would be riding an electric bicycle for sure, and wouldn't even bother with gasoline AT ALL***