If you're in the US or Japan and have an Android device, holla.
Nintendo is now taking applications for a mobile beta.
Mario Kart Tour has opened up applications for a closed beta test on the game's website, with signups open until 10:59 p.m. Eastern time on May 7. The beta itself is scheduled to be active from May 22 - June 4.
Participants must be in the United States or Japan, and have an Android device. "Certain devices" will not be supported.