It's called "TICKET TO RIDE," and surprisingly Jacob has gotten REALLY competitive about winning.
We got this game for Christmas from our Schellenberg cousins. We have enjoyed playing it with friends and family. I've noticed that along with Settlers of Catan, Germans make really good games. We enjoyed many fun rounds with Hannah and Axel when they were here. (Jacob was also caught cheating an hour into the New Year but found out later that his intentions weren't for himself.)
P.S. This is the North America version. There are different countries with different rules for variety.