https://nocamels.com/2012/06/new-cleantech-co-to-power-cars-with-aluminum-grains/ https://nocamels.com/2012/06/new-cleantech-co-to-power-cars-... An example of

https://nocamels.com/2012/06/new-cleantech-co-to-power-cars-with-aluminum-grains/ https://nocamels.com/2012/06/new-cleantech-co-to-power-cars-... An example of a pourable variant.