Basically as you understood from the glossary meaning it means modifying
 cars with  picture editting programs like, photoshop, coral draw and others.
 Using those programs you can change the color of the cars, put new parts,
 brush new body kits... as a whole, you can make the ride of your dreams.
 That is the most attractive point i think :)

Here is my dream that became true...
I really worked hard on this and at last i was able to finish it after 1
month hard job. My inspiration on this chop was a shuttle that's why i gave
it the name. Technically it's a jet-engined flying convertible vehicle and
as you can see on the sketch the arrows show the transformation mentality.
Here is the link to full res. sketch  link
I hope u like it, btw i'm working on sketching the front angle so keep watching...

"SJ1903 Shuttle Concept"

Chop Details;
Program used  : Photoshop CS2.
Technique        :      Airbrush.