I was driving home from the University District in Seattle on the I-5 on ramp about to merge into freeway traffic when the 5 cars in front of me all piled up.‚ I was the last car in the line and slammed on my brakes, stopping about 5 feet short of the last persons’ bumper.‚ Pretty nuts.‚ Fortunately, no one was seriously injured.‚ I turned on my emergency lights and went and checked on all the people to make sure they were okay.