Would switching to snow mode save gas?
 

I haven't messed with the Snow Mode option much because I've never had to deal with snow, but I'm assuming it would maybe limit throttle or something so you don't slide out. I've been trying to keep the RPM's low, but haven't had the strength to maintain doing so :(

I don't know about rev limiting, but I do know that Snow Mode makes it so you start from a stop in 2nd gear instead of 1st so as to reduce wheel spin on launch. Doubt it will really help fuel mileage.