I have the Infiniti g35x and I have never had any problems with it. The X is all wheel drive and has a snow driving feature that redistributes power to the axles evenly for even better traction in snow. Wifey or myself never got stuck even through all those storms. Other car is a 4WD Pathfinder and I was indifferent which car to take in a blizzard.
I would not get this car without all wheel drive. A friend has a g35 rear wheel drive and kept it garaged in bad weather.
It has the same award winning engine and drive train that is in the Z models. Acceleration and handling are great and it looks fast even standing still.
JMO