Hey,
I do Realistic Car Drawings using just pencils and markers without any computer programs.
Couple of my works:
[IMG]http://fc00.deviantart.net/fs70/i/2013/308/a/7/aventador_by_*******-d6t036a.jpg[/IMG]
[IMG]http://fc08.deviantart.net/fs70/i/2013/297/9/f/winner_by_*******-d6rmuug.jpg[/IMG]
[IMG]http://fc05.deviantart.net/fs71/i/2013/271/a/e/lamborghini_countach_5000s_by_*******-d6oahwq.jpg[/IMG]
[IMG]http://fc07.deviantart.net/fs71/f/2013/241/d/a/porsche_by_*******_d6k656z_by_*******-d6k65l2.jpg[/IMG]
[IMG]http://fc00.deviantart.net/fs70/i/2013/234/8/9/nsx_by_*******-d6j8gzm.jpg[/IMG]