When To Use Your Emergency Fund

I was having an interesting discussion at work the other day, followed by reading a similar topic on a fellow pf blog, and felt like discussing it here to see what you guys think. One of my coworkers just bought a brand new car. She had previously owned the same car for almost 10 years and was ready for a change. She prepared by saving up for the down payment and really did a lot of research into the car that she was interested in. Plus, because my company works with most of the dealerships he