It's a 4 wheeler!

James noticed the "4X4" on the sides of trucks recently and asked what it meant.  We explained to him that it meant the vehicle was a 4-wheel drive.  I guess Jack missed part of the conversation because he'll see a truck, count the number of tires... 4!, and declare that he has found a 4-wheel drive truck!!!  I don't have the heart to correct him so we have been finding LOTS of 4-wheel drive trucks around here lately!