The car that pretty much started it all keeps rolling on and on!! Three generations in sixteen years and more than three million units sold worldwide – as of the end of June, those are the stats on the Toyota Prius. Even though Toyota says Prius sales might not reach the goal of 250,000 units this year, the little hybrid that could still doesn’t have any problem flying off dealer lots. The second-generation Prius sold 1.2 million examples in its eight-year lifespan, and the third generation, introduced in 2009, has sold 1.7 million examples in just four years.