A major path toward curbing GHG emissions emitted from diesel vehicles relies on the use of renewable fuels. However, despite a number of projects already under way to help increase renewable diesel capacity (ambitiously from 1 billion gallons a year to more than 5 billion by 2024), limits on the feed stock availability and on the actual support available for renewable diesel production means that delivering on the aforementioned 5-billion-plus gallons per year likely won't be possible. In fact, a report put together by the clean fuel consultancy Cerulogy for the International Council on Clean Transportation (ICCT) states that not only will the market be unable to support 5 billion gallons of renewable diesel by 2024, but it likely will never be capable of such a feat.