According to McDonald's Nutrition Calculator page, the following order would contain 2480 kilocalories (or 10376 kilojoules):
- 1 x Double Bacon Smokehouse Burger
- 1 x Large Chocolate Shake
- 1 x Large World Famous Fries®
Would it be possible to somehow extract/convert that energy and use it to power a car engine? If so, what would be the involved chemical processes, equations and byproducts?
Note that this question is entirely motivated by curiosity and by an ingenuous notion of Lavoisier's principle of mass conservation.