German luxury carmaker Audi, along with Sunfire, a German energy company has said that they are able to synthesize diesel from water and carbon dioxide, which will help fuel cars.
To do this, water has to be heated to 800 degrees Celsius, which creates steam. Then electricity from a green power source heats the water, and then the high-temperature electrolysis breaks it down into hydrogen and oxygen.
The hydrogen is mixed with carbon dioxide taken from air, and under high heat and pressure, they two form a liquid known as ‘blue crude'. This liquid is further refined into e-diesel, as Audi calls it.
This e-diesel is being mixed with traditional diesel to power cars, but has the potential to power cars by itself. Audi claims this diesel to be free of sulphur and burn cleaner than traditional diesel.
Audi also claims that producing e-diesel is 70 percent more efficient and estimate the price to be USD 4.00 to 6.00 per gallon, once production goes mainstream.