Traction control on the Prius (I + II) is very handy in the snow, and the new VSC option with the Prius II is really amazing in the snow, you can brake hard and steer even on the slipperiest stuff. It feels a bit weird with each wheel being braked independently to provide "steering" but it really works! I'm not sure if I would get the VSC option since it doesn't snow here all that much (although the front yard is still white) since regular ABS and the traction control are quite good... Would be nice if it was included standard.
