Because not a very large percentage of the population can now afford to buy a new car. Everyone mostly buys old cars. You can find a pretty good
Top Car Reviews right here. There they describe the pros and cons of new cars. Where the car is more comfortable, what kind of ride it is designed for, whether the car is suitable for country driving, etc. But I will tell you that if you go further than out of town in a new car like Toyota Camry or BMW i4, then you will not go far because the clearance of the car is very small.