We not done with mine cart will add new features:
In future next verison:
V2: Light on/off (playerlight) and Speed with gui.
V3: add script for mine cart ( Brick Tracks will be post new topic.) Brick track GUI almost finish.

final V4: add Double mine cart example:

(coupling/uncoupling)
Note: There two kind of brick track scale N and HO, that N scale brick track for mine cart. other HO scale brick track for big train ( subway, Trams, etc.)
Uxie, The-Legend and I continue work on this. But as for brick track most is me. If these impossible would be successful or not.
Few week ago Uxie and I did tested on Wedge Bricks. It pretty worked good. I saw Uxie did build Wedge Bricks and he use mine cart drive against these Wedge Bricks make mine cart turn.