From Reuters:

Japanese motorists may one day pump their cars full of sake, the fermented rice wine that is Japan’s national drink, if a pilot project to create sake fuel is a hit with locals in this mountain resort.

The government-funded project at Shinanomachi, 200 kilometres (124 miles) northwest of Tokyo, will produce cheap rice-origin ethanol brew with the help of local farmers who will donate farm waste such as rice hulls to be turned into ethanol.

"We want to present the next generation a preferable blue print — a self-sustainable use of local fuels," said Yasuo Igarashi, a professor of applied microbiology at the University of Tokyo who heads the three year project.

I will be amazed if this works, but maybe this is what Japanese Prime Minister Abe was referring to when he proposed to cut greenhouse emissions by 50%.  No word yet on the potential fuel benefits of soju.