U.S. surgeon Dr. Craig Alan Bittner has admitted that he used fat to make his car work, just as if it was loaded with gas. After boasting about his use of alternative fuel from thighs and posteriors on his website, Dr. Alan Bittner was confronted among others, the California Department of Public Health and the state Board of Registration in Medicine.

Alan Bittner, who founded a high-profile clinic on Rodeo Drive, the Bond Street of Los Angeles, claims to be able to power both his Ford Explorer and his girlfriend's Lincoln Navigator on biofuel converted from excess flesh from human tums, bums and thighs. "The vast majority of my patients request that I use their fat for fuel – and I have more fat than I can use," he says.

Nevertheless it is apparently illegal in the United States to use human body parts (even the parts people are throwing away) as fuel to power automobiles and therefore Dr Bittner's clinic has been raided by California Health Department officials.

Any type of fat, animal or vegetable, can be turned into biodiesel. But it is unclear when Dr. Bittner began converting fat extracted during liposuction to fuel and why he ended the practice. According to Forbes, a gallon of fat could produce about a gallon of fuel. Both types of fuels gave the same mileage.

It is still not known that how the doctor went about turning the fat sucked out of patients into fuel, but he claims to have performed roughly 7,000 liposuction operations