Get in loser.Keep RovingIn preparation for the first crewed lunar mission in half a century, NASA is prototyping a new Moon rover — and it looks like some pretty distinctly Earth-bound vehicles.Announced in a NASA press release, the new Ground Test Unit (GTU) is currently in development at the agency’s Johnson Space Center in Houston, Texas.As photos of the prototype in action show, it’s already been taken for a joyride by some big names: astronaut Kate Rubins, the first person to ever sequence DNA in space, and Apollo 17 pilot-turned-senator…