Classic car renovation or Automobile restoration is the process of repairing the degraded aspect of a car to return it to an overall "authentic" condition. To renovate a car without updating or upgrading it by keeping in line with how it would have appeared when first offered for sale. Non factory paint codes and even paint schemes, interior and chrome trim of the time period may be used if they were commonly shared between similar models of the era so as to look the part. Many restored cars may lose their original engines and have a similar capacity or model related engine installed.

Sometimes industry imitates wild nature.  Sandblasting is very similar to a natural process called erosion.  According to Wikipedia, Erosion is the process of weathering and transport of solids (sediment, soil, rock and other particles) in the natural environment or their source and deposits them elsewhere. But in the wild nature the process takes millions of years to do the job. On the other hand industrial sandblasting erodes the surfaces of many materials to achieve a proper finish.