Here’s The World’s Biggest Airplane Taxiing Down a Runway at 46 MPH

Stratolaunch is prepping for its maiden flight next year, taking baby steps along the way.

Here we are in March and while it still hasn’t taken to the skies, the world’s largest airplane is certainly coming along.

In a new video, the Stratolaunch can be seen taxiing down a runway at 46 miles per hour, impressive for an aircraft weighing 500,000 pounds with twin fuselages and a wingspan of 385 feet.

It may not seem like much but the plane only got up to 28 mph on its last runway test, so this is yet another improvement on its way to Stratolaunch’s first test flight in 2019.