Cash spills on the highway: What would you do?

Northbound vehicles drive on Interstate 270 past the exit to Hyattstown, Md. Friday, March 23, 2012. Maryland State Police say an armored truck lost some cash on I-270 near Hyattstown. (AP Photo/Manuel Balce Ceneta)

March 25, 2012 7:45:12 AM PDT
You're cruising along the highway when you see a bunch of green bills fluttering around like flakes in a snow globe. You get closer and you realize it's cash. Other drivers are pulling over to snatch what they can. What do you do?