Scales - every chart has its own scale, rendering it impossible to read across charts.
Colors - every brand has its own color. This feature is redundant since the data labels already serve the purpose of linking the two columns of charts.
Compression - it is impossible to judge the growth or decline of individual companies, especially since only the current market share is provided.
If anyone has access to the data, please send them over so we can remake this chart. Or just send in your charts and I'll put them up here.
Reference: "Now Playing in Europe: The Future of Detriot", New York Times, Oct 28 2006.