 The 2006 Dover 400 was the twenty-eighth of thirty-six scheduled stock car races of the 2006 NASCAR Nextel Cup Series and the second in the ten-race season-ending Chase for the Nextel Cup.It took place on September 24, 2006, in Dover, Delaware, at Dover International Speedway, a short track which holds NASCAR races.The NASCAR event makes use of the track's standard configuration, a four-turn short track oval that is long.