What do you mean "used"?

This isn't going to come as a big surprise to you all, I know, but much of your time on a road trip is spent on the road (go figure...). As a consequence, you find yourself paying an unhealthy attention to the things that catch your eye by the side of the road. For example, what's the deal with water towers? What are they for? And why so many in the US and so few in the UK? Answers on a postcard please...

I am also intrigued by how many different kinds of churches there seem to be in the US. Whether it's at a First Baptist Church, a Methodist Church, a Lutheran Church, or a First Church of Christ the King, Americans seem to be spoilt for choice in how they worship the Almighty.

Perhaps most unsettling are the road-side signs. The Kentucky to Tennessee leg of the trip seemed to provide the best of these, such as the confrontational "If you died today, where would you spend eternity?" (personally, I'm not so sure but I'm hoping it's not in Kentucky) or the straight-to-the-point "We Grow Hair". But the winner has to be "Used Cows For Sale". Yes, you read that right. And no, I don't know what it means either. A quick search on Google reveals that it's a known "wacky" sign, but doesn't reveal whether it's a serious sign or an indication of the zany sense of humour of Kentucky farmers. Who cares. Just sit back and enjoy: