They hide among new car models, lurking between adaptive suspensions, satellite radios and rearview cameras. It's a phenomenon many car buyers don't see on the sticker: Prehistoric equipment that defies time, technology and most of all - common sense.

To make the point, we highlighted 10 obsolete features on new US model cars and trucks, and solicited comments about them from John Paul, long-time technician and AAA "car doctor," and David Champion, a senior auto tester for Consumer's Union.

- Clifford Atiyeh, Boston.com Staff