Where is the Mario Kart Live: Home Circuit game cartridge

Is there a physical Mario Kart Live: Home Circuit game cartridge? The Nintendo Switch remote control racing game has launched, but it is without a cartridge.

Buy Mario Kart Live: Home Circuit -Mario Set - Nintendo Switch online

Mario Kart Live: Home Circuit™ for Nintendo Switch - Nintendo Official Site

Mario Kart Live: Home Circuit - Mario Set

Mario Kart Live: Home Circuit Wall Mount & Charging Base Great for Game Rooms - Denmark

Mario Kart Live Kart Connection / Pairing Issues - Stoned Gamer

Mario Kart Live: Home Circuit gets unofficial remote play on Surrogate.tv

Poll: Mario Kart Live: Home Circuit Is Out Today On Switch, Are You Getting It?

Mario Kart Live: Home Circuit - Unboxing, Setup and Review

Nintendo Switch Mario Kart Live: Home Circuit (Mario) with HDMI Cable + More