The appreciation that people have for cars varies greatly. You have collectors that like the classics and strive to maintain everything in its original form. Then you have the guys that will do anything to get a bit more speed. Nothing is sacred and can be modified, improved or removed. This is a great example with the classic T-Bird and custom race car. 
 

The appreciation people have for cars varies greatly; collectors who strive to maintain its original form and the guys that will do anything to get more speed.  Photo by Tim Stanley Photography.