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The Brit-built Welbike was developed specifically for Her Majesty's Royal Air Force paratroopers to chute in and ride around.

While motorcycle engines aren't usually strong enough for heavy cars, some models are lightweight, allowing them to make full use of these powerhouses.

Frank Sinatra may or may not have ever made his well-known derogatory comment about Ferraris. Either way, he had an excellent, eclectic car collection.

Variable valve timing and variable valve lift may sound similar, but they're entirely different. Here are the differences between them and how they work.

Ford and Chrysler both created powerful engines that were banned by NASCAR. Their similarities made them powerhouses, but they also have notable differences.