It is better not to brake at all, and if you drive around in circles at low speeds in a light, tiny, aerodynamic car you can literally get thousands of miles pe

It is better not to brake at all, and if you drive around in circles at low speeds in a light, tiny, aerodynamic car you can literally get thousands of miles per gallon[1]. Even an efficient car like a Tesla is not close to a theoretical limit, so conservation of energy is not an issue. [1] http://en.wikipedia.org/wiki/Eco-marathon http://en.wikipedia.org/wiki/Eco-marathon