Tesla's made quite a point of spending no money on advertising, but instead relying on free press coverage and word-of-mouth. Obviously, this couldn't go on forever. Today while looking at the (excellent) fivethirtyeight.com website, I noticed a Tesla ad. I've included a screen shot, the ad's at the lower right. Has anyone else seen/heard of any Tesla advertising? Buying a little space on fivethirtyeight isn't going to cost a huge amount of money, but it's still indicative of the fact that they now need to convince people to order Roadsters.