For next summer's Avengers: Age of Ultron, Scarlett Johansson will be seen of the big screen riding the Harley-Davidson LiveWire electric motorcycle.

Road & Track states:

"Paparazzi at the film's Seoul, South Korea, set captured a stunt rider riding the concept e-Hog for one of the film's action scenes. While the crew kept it covered when not in use, there was no hiding the bike once it came time to roll camera."

Here's video of LiveWire from the Avenger Age of Ultron set:

Source: Road & Track