Ditching fuel is just one step to an environmental-friendly cars that Tesla is most popularly known for. The all-electric car maker has yet made a name for offering "all vegan" interiors for its latest SUV — the Model X.

PETA (People for the Ethical Treatment of Animals), one of Tesla's shareholders, praised this move of the auto company to provide an option primarily for vegan and vegetarian customers to get a Model X with synthetic leather interiors, including the seats, gearshift and steering wheel. Tesla labels it as "Ultra White" on their website.

The animal rights group said that, in its discussions with TESLA, they urged the company to use only vegan leather in order to reduce its carbon footprint. In their annual meeting held in June 2015, Tesla CEO Elon Musk promised the group that he will "look into it."

PETA executive vice president Tracy Reiman said in an official statement: "By offering a 100 percent leather-free car, Tesla is pushing its eco-friendly business even further into the future. PETA can now point to Tesla as a source for top-quality vehicles whose cruelty-free seats are as kind to the environment as its engines are."

This is not the first time, though, that the automaker has offered faux-leather materials for its electric cars. Their Model S gives potential buyers to opt for the standard "Multi-Pattern Black Seats," which features artificial leather accents and synthetic cloth seats. Tesla spokesperson Khobi Brooklyn also told Business Insider that they can provide non-leather steering wheel for customers who would want one.

BMW is another giant auto company that has moved into more eco-conscious materials for its vehicles. It currently offers a non-leather option — the SensaTec. Instead of using animal skins, BMW blends recycled materials and wool for the fabric and uses plant-based dye for the color. SensaTec is available on 2, 3, 4, 5 Series, X1, X3, X5, Z4, and i3 models.