What can you get for $2?

I am amazed. Today I saw gas for $1.999. I remember when I was a freshman in college and I freaked out because gas went over $2 a gallon, which meant filling up my 24 gallon tank cost more than half my monthly allowance. Now, my car has a more reasonably sized 17 gallon tank and it cost less than $40 to fill up. I'm not sure why gas has gotten so cheap, but whatever it is, keep it coming. I think this calls for a road trip. Anyone up for a vacation? Where should we go?