This game has a hidden level select.
This game has a prototype article
An alternate ROM was included in the July 2020 Nintendo leaks, doesn't match final. Found in (and encrypted) NEWS\テープリストア\NEWS_02\usr01\uji\Mail\inbox
A poor early concept/execution of a 3D racing collectathon game with Taz-Mania characters stapled on.
At the Options screen (press Select at the title), press A, Y, A, Y, X, Y, B, A, R, L. The screen will shake if done right, and a Level Select will be added to the menu.