Upload tiles.bin (GBTD export file/All-purpose binary):
Download: Download in reverse Map Table order | Upload:
Map Table: edit tiles Show Grid BG Tiles: BG Palette: Map Part: Map View:
PaletteHorizontal Flip
Left 0 1 2 3
Right 0 1 2 3
[Save]

https://github.com/emutyworks/Learning-GB-Programming/wiki/Car-Game
Sample data:
tiles.bin
map_editor.txt