Used cars for you

We have millions of cars. Almost every family have their own's. Cities are crowded. Car crashes are somethig normal. In my opinion they occurred especially when we are in hurry going to work or after it. We are sleepy or tired, it's normal. In crashes both new cars and used cars are cause of accident. Some people are saying that used cars more often are responsible for accidents because they're not so technicaly efficient as new one's. I think more important are driver's skills and fortune simply.