meaning around 20 cats are needed for a full tank
driven it for 105,000 miles without any problems
Now, assuming that the German can convert into imperial units, and that the guy's surname just happens to be pronounced "c*ck"...
105,000 miles... well, an average diesel saloon will do about 40mpg, right? So, that is 2625 gallons right there, or about 11,800 litres... that is nearly 5000 cats. Where the hell is he going to get hold of 5000 dead cats (Chinese takeaway jokes withstanding)?! Bear in mind they have to be FRESH dead cats... I calculate there is only about 800g of carbon in an average adult cat, and decomposition will rapidly decrease that amount.
And the fact it centres on the use of cats... whilst the cat is very well adapated to arid climes, there is nothing special about its chemical composition. If I were to choose an animal to turn into hydrocarbon fuel, the cat would be my last choice. Not because I like cats, but because of a very distinct feature of their metabolic processes: they derive almost all of their energy from protein. Proteins are a pretty dirty energy source, this is why we have kidneys and why cats often suffer from kidney problems in later life. So, any "biodiesel" process would have to get rid of the many other chemicals that make up the contents of the cats digestive system.
Me, I would choose the animal that runs on the purest hydrocarbons. A cow. Think about it. It ingests almost pure cellulose and water. Brilliant.
However, I would just cut out the middle mammal entirely. Make it out of that cellulose to start with. C6H12O6 (I know, that's glucose
), a wonderfully pure and clean source of energy.
Oh, and one more thing: "CAT" is the acronym by which the Centre for Alternative Technology is known. CAT is an advocate of biodiesel research... A coincidence that THIS is the animal they chose?