The two companies are developing gasoline blends that use a mixture of feedstocks, including biomass and ethanol, to reduce emissions in the exhaust.

These fuels are in the testing phase but have already been proven compatible with Toyota vehicles.

If successful, this alternative fuel program could offer a solution for those who want to keep their existing cars or upgrade to cleaner hybrids or other vehicles with internal combustion engines.

Exxon and Toyota have a history of developing technologies to reduce emissions from transportation.

For example, Exxon has previously advertised algae as a sustainable alternative to diesel fuel.

Toyota has also invested heavily in hybrid technology and hydrogen fuel as part of a multi-pronged approach to reducing emissions.

Andrew Madden, Exxon's vice president of strategy and planning, claims that this new fuel could reduce carbon emissions by up to 75 percent, compared to regular gasoline.

This means that the fuel has the potential to significantly reduce greenhouse gas emissions from existing vehicles.

Both companies believe that while demand for new electric vehicles will continue to grow, efforts will also need to be made to reduce carbon emissions in existing fleets to meet climate targets.

This partnership is part of that effort to keep internal combustion engines viable while also reducing their impact on the environment.

The partnership between Toyota and ExxonMobil highlights the importance of collaboration between the auto and oil industries in developing sustainable transportation solutions.

By working together, these industries can help reduce emissions from vehicles and promote a more sustainable future.