A magazine wants a graphic that presents the sales of cars in the United States, broken down by the major manufacturers. To get the attention of readers, the graphic will show a car representing the sales of each of these manufacturers. How should the artist pick the size of the graphics for each manufacturer?

Manufacturer ................................................ Vehicle Sales in Nov 2011
General Motors ......................................................... 180,402
Ford ............................................................................ 166,441
Chrysler ..................................................................... 107,172
Toyota ........................................................................ 137,960
Honda .......................................................................... 83,925
Nissan .......................................................................... 85,182