Spring RTS Engine

Are there any examples out there of using a side slope factor with the spring engine? I'd like for vehicles that are moving perpindicular across a slope to be affected by said slope, with possibly this direction of movement causing movement downhill forcibly at some point. Maybe even the same effect would forcibly turn the unit to face downhill. Anyone know how should it be done?

You could lua it but the unit would only be confused because the pather has no idea what's happening.

Hmmm. You're right. I can see units getting stuck at the bottom of hills.

Someone added sliding in, but it was disabled.