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One lap of the Web: $52 million Ferrari 250 GTO, Alfa Romeo Montreal for sale and more bizarro engines

-- Even as the hammer fell on Juan Manuel Fangio's $30 million Mercedes-Benz W196R, we knew that that car wasn't the most expensive one ever sold -- it was merely the most expensive car sold at auction. Other cars were reported to have traded for a bit more in private sales. But now we have word of a car that absolutely blows the sale price of Fangio's little Silver Arrow out of the water: a 1963 Ferrari 250 GTO that sold to an undisclosed buyer for $52 million.

Battery breakthrough set to accelerate electric-car development

A team of scientists working at the Massachusetts Institute of Technology are claiming a significant breakthrough in recharging times for lithium-ion batteries. According to findings published in the scientific journal Nature, MIT researchers Byoungwoo Kang and Gerbrand Ceder have unlocked the potential of lithium-ion batteries by patenting a unique process which is claimed to allow a typical laptop power pack to be fully recharged in less than a minute--an improvement in recharging performance of roughly 90 percent over existing lithium-ion batteries. Lithium-ion batteries generate electric current via the flow of lithium ions across an electrolyte, from an electrode to a cathode.

Fiat previews the 500X small crossover

Fiat gave an unexpected sneak preview of a crossover variant of its 500 minicar. The model, which will be called the 500X, will go on sale in Europe in early 2014 and shortly after in North America. Fiat brand global boss Olivier Francois showed a full-size styling model of the 500X during the media launch on the 500L small minivan in Turin, Italy, on July 4.