There's nothing quite like the iconic sound of a classic Harley-Davidson engine, but longtime fans have noticed that sound ...

While major motorcycle manufacturers produce a wide range of impressive mainstream bikes, the custom-built world of motorcycles is far stranger, with some examples that seem to break all the rules.

BMW is one of the most recognizable names in the auto industry, with a significant presence in the automobile sector. In its early days, BMW even built airplane engines for Germany's air force. Still, ...