I haven't drawn a car for a while, so I roughed this one out in pencil. Then I inked the lines that I liked with a couple of pens. After that I went over the inked drawing with an eraser and got rid of the pencil lines.
Next I colored the car with my Bamboo pad and an older version of Photoshop Elements. Then I made a background for the car and copied and pasted the car onto that, again with Photoshop Elements.