Personally, I'm disappointed that the IEEE is reporting this as a good idea. It's not and I'll just outline a few of the issues:
- Horribly exothermic, a lot of lost energy.
- Did I say lost energy? Making aluminium from aluminium oxide takes a lot of energy.
- Hydrogen embrittling of the gasoline engine.
- Accelerated corrosion of the exhaust manifold.
Come on! This shouldn't even have passed a basic engineering review. This is basic A Level chemistry!