This morning it was a bit cold (8 degrees F). I warmed up the engine for about five minutes and began to drive. While I was getting out of my driveway, I put brake to slow down, but brake didn't work! It was spongy and very soft. I depressed the brake pedal really hard, but I could not make a stop or slow down. I almost hit other car parked in the street. After pumping brake pedal several times, it started to work normally. Same thing happened last year. It happened only in the very cold morning in winter. I guessed moisture buildup in the brake fluid could be a culprit. I never flushed and replaced the brake fluid. So I had it replaced at the local Goodyear service center. It's less than a year ago. Is this kind of brake failure normal in very cold morning? Do I need to replace brake fluid again? I had the brake pads replaced 6 months ago.