October 1st is the national day of our country. This year, we have a golden week holiday for eight days. Besides, according to the new rules, all highways of our country are free of charge during the eight-day holiday. Therefore, many people choose self-driving tour, which expects to save much money. However, during these days we can see that the situation is not as good as expected.Because of the huge traffic flow, tens of thousands of people catch traffic jam in highways, which rarely happened in the past. Besides, when they get to the destination, they find that they are crowed with people, which makes their trip worse.