Fixing more stuff:
Added a display for how far you've driven each car (replaces the weight if you've driven any distance)
Fixed 12 cars not saving/loading their miles driven correctly (overlapping internal save IDs, sorry)
Fixed last two columns being unselectable with gamepad
Fixed slalom time being exactly correct (1:45.0, for example), but only getting 2 stars (rounding error)
Tweaked some turbo-tag slalom/checkpoint races to have slightly more (or slightly slower) demons
Tweaked Maverick race to be longer
Tweaked Convery Checkpoint to nr more fun and possible to do (and fixed goals)
Tweaked Mono Rush Hour to have a little more traffic
Tweaked Maverick Slalom (endurance) to be a little shorter (and more possible)
Aside from tweaking some near-impossible races, I fixed an issue with save IDs overlapping for vehicles, and made the game display how far you've driven. This replaces the vehicle's weight once you drive it on the race-select screen.
There were 12 vehicles that had overlapping IDs, and it appears that none of those were saving/loading distance driven correctly. Sorry for missing that issue!
Luke