Hi, I had a 2010 Prius III and was involved in a bad accident and had to total the car. Now I am considering to get 2012 five with advanced safety options like lane keep assist(LKA) and pre collision system (PCS). Does anybody had any experience with those options and how helpful those options can be in case of any unfortunate accidents? Does PCS work in case of impending crash in front of moving objects like car as well as stationary object like pole or something similar? I understand that this features are not designed to replace safe and attentive driving but can help lessen the impact just in case. Thanks.