For decades, General Motors (GM 0.40%) sold more cars around the world than any other automaker. But a few years ago, Toyota (TM 1.34%) stole GM's sales crown. GM has been fighting back -- but now there's a third contender. Could GM fall to third place? In this video, Fool contributor John Rosevear takes a look at the state of the global auto sales race -- and makes his prediction for who will prevail.