Diesel oil isn't in any meaningful snese an "alternative fuel".

Vegetable oil is likely to be an increasingly important fuel, and it doesn't mess with the environment the way fossil fuels do - but it takes a lot of land to grow biomass fuels like this - I think it's been estimated that it'd be lkkely to take an area equivalent to the United Kingdom to produce enough oil to power all the vehicles we use.

Eectrical-powered, or hydrogen-burning vehicles are likely to be the maoin ones in the future, wiht the elcetricity to drive them and to produce the hydrogen coming from tidal, wind or sun-power.

Arguing whether the blame for the present mess is primarily big business or government rather assumes it is possible to draw a clear line between the two.