Biofuel is a dead-end technology. Synthetic fuels from direct air capture of CO2 are about 3X as efficient in terms of energy in -> energy in fuel, while also avoiding wasting all the extra nutrients (phosphorus, potassium, nitrogen - some of which are scarce) needed for the plant to grow that give nothing in terms of energy storage and must be recaptured.

A bunch of solar panels and some direct air -> methanol plants uses far less land than corn fields for bioethanol, while also providing easy avenues to switch energy from feeding the grid to filling the tanks depending on conditions.