Stated basically it's a resource which cannot be refreshed in a fee than it's consumed, corresponding to or higher. About the other hand, if we were able to make cars that work 100% on solar power, we would be employing a renewable source - the sun. These fossil fuels ostensibly give you the power that pushes the U.S's economy. Because the sunlight creates so much power that individuals wouldbe in no danger of depleting it it would be renewable.
On the other hand, if we could create automobiles that work 100 we'd be employing a renewable resource - sunlight. These fuels ostensibly provide the electricity that pushes the U.S's economy. It would be renewable because the sunlight creates electricity that is so much that people will be in no risk of depleting it.