Harley Davidson has unveiled its first electric motorcycle, and it will grace the screen as super-spy Black Widow's ultra-quiet ride of choice in Avengers; Age of Ultron next year.

The motorcycle, seen above, had already been spotted on the set of the film. It was Comic Book Movie that made the connection between what had been photographed in spy shots and a story in Wired that identified The LiveWire.

"This has never been about an electric car," said Mark Hans-Richer, Harley-Davidson's Chief Marketing Officer, in the video embedded below. "This has been about an electric guitar. Expressive, emotional, fun."

Captain America has enjoyed a promotional partnership with Harley throughout his first two movies and the first Avengers.

You can see more from the motorcycle, which whines like a jet engine as it speeds up, below.