What's the significance of "Singer?"

From their website, http://singervehicledesign.com/ :

Singer Vehicle Design was founded in 2009 to explore the creative possibilities within the vibrant world of the classic automobile.

We are dedicated to the passionate study, preservation and optimization of the world’s most respected high performance vehicles through modern techniques and unique and fresh perspectives.

Our primary focus since inception – indeed, our obsession – has been the development of a meticulously restored and optimized air-cooled Porsche 911, in our view the most important sports car on the planet and worthy of such celebration for its iconic status and the genius of the company and the men that created it.

By performing restoration and state of the art modifications to clients’ vehicles to update performance, aesthetics and modern day usability, we attempt to optimize the strengths while preserving and perhaps enhancing the essence and magic of this incredible machine.