Final Stretch

Player Names
When starting a Time Attack or Expert GP game, enter one of the below words as your name.

Except for the first two, all of these names require some awkward manipulation of the controller in order to work. After entering the name, you must press and hold A on the "END" option while also simultaneously holding L + R + X + Down + Left.

Test Mode
Entering the test mode takes you to this screen, which shows the version numbers of the SNES's CPU and PPU chips. It's also supposed to show controller input, but nothing else on this screen seems to do anything. Pressing Start + Select takes you back to the main menu.