ChainSwordCS | Beta Mario Highway (3) - mr_highway_demo (Collision) - Mario Kart Arcade GP 1/2 @chainswordcs | Uploaded February 2021 | Updated October 2024, 11 hours ago.
Filename is mr_highway_demo_a.bin

I believe this to be a third beta of this track. Based on the name, this collision and the model (not seen here) may have been used in GP 1's attract mode.

This is yet another beta remnant leftover from GP 1, because GP 2 was built upon that game.

XDelta patch: drive.google.com/file/d/1ANEas2uwU1cSHb-kc2S_GaBmjxolocQx/view?usp=sharing