The market for fuel-efficient vehicles broadened significantly in 2011 with the introduction of new plug-in and all-electric consumer vehicles. The commercial market has continued to grow slowly as more fleets gain the experience of running hybrid drive alongside conventional trucks and buses and can begin to accurately gauge the difference in maintenance and fuel usage across the fleet. Fears of battery failure and the associated large replacement cost have receded and a commercial recharging infrastructure has begun to become a reality in many large cities around the world. The main obstacle to rapid market growth remains the high initial cost premium. This study outlines the history of hybrid vehicle technology development and looks at the drivers and inhibitors in today's most important automotive markets, as well as forecasts the difference in anticipated adoption rates in the six major world regions. The forecast period covers 2010 to 2020.