The 2010 Toyota Prius is the successor to the original Prius, one of the most influential cars in history and the car that put Toyota ahead in the race for clean and green. The new Prius boasts a more efficient hybrid system, better interior packaging and more interior space as well as new electronic features. The exterior is improved too, with the hatchback, or fifth door, sporting sharper definition. The new Prius is scheduled to go on sale this spring and buyers of the first Prius are already lining up to place orders, according to Toyota executives.