DEARBORN - Sustainability is the biggest issue facing global business in the 21st century. While breakthroughs like improved battery technology will likely provide a solution to the CO2 challenge, another issue -- "Global Gridlock" -- is quietly taking its place.

Global gridlock can be defined by numbers. The world's population is growing and is becoming more affluent. There are approximately 6.8 billion people in the world today. Within our lifetime, that number will approach 9 billion. Today, there are about 800 million vehicles on the road worldwide, but by midcentury that number could grow to between 2 and 4 billion.

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