The latest patch to Mini Motorways addresses a recent bug causing save game issues with the Busan map challenge titled ‘All Gas No Brakes’. With this fix, you should be able to resume your saved game.
Miniversary Update - Patch
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 11742016 · 1.11_miniversary branch
Steam updated · First observed