Mickey's Speedway USA is the handheld version of the N64 game, also developed by Rare.
Leaderboards:
https://www.speedrun.com/mickeys_speedway_usa_gbc
A full game run (on Beginner) takes over a half an hour to beat. The character stats are relatively the same as the N64 version.
MSUSA also features a "Driving School" tutorial mode that takes you on 5 lessons (at the start) where you want to achieve the gold medal by beating them as fast as possible. It also seems there are 3 extra challenge levels featuring Dewey, Huey and Louie that have a (not yet) fully understood unlocking method. That will most likely require a verification movie that goes through that unlocking process.
I've been working on a TAS that attempts to beat all these. I thought I was doing fine until I asked for feedback in the game's speedruning Discord server. Turns out I was missing a powersliding technique as well as a few other things, and Mickey seems to be the better character choice unlike of what I initially thought.
User movie #638754384663830704
Currently I'm researching and analizing this game a little closer, thanks to the combined efforts of meauxdal and m3g4t0nerr who are doing RTA attempts at these levels, which hasn't been done before.
Here's also a RAM Watch file. Still unsure as to what is exactly the X, Y (and Z?) positions and exact speed values, but it's a start I guess:
User movie #638766223865899189
This might take longer to finish than what I initially thought.
