The game seems to be missing some basic sound design.
Minecarts:
It would seem the minecarts are actually maglevs and are not touching the tracks below them.
You also can't hear the wind rustle past as you go 8 m/s.
Pistons:
I was also looking at the recently released vid of pistions in action and I notice no sound for part at the end where he slides the cobblestone out the way to crate a door. It was cool, but at least throw in sounds for block against block friction? Like when Lara Croft opens an ancient stone door.
And maybe a sound like steam releasing for when a piston extends/retracts.
Minecarts:
Pistons:
-Gruff