Marni, re: the Trek Madone. My old bike is older than my son--age 19. So the fact that I buy a new bike every two decades contributed to the "buy up" idea, even though I actually feel kind of like a fake on it. But I spent two summers riding a lot of miles on my old mountain bike with some less knobby tires on it. And I knew that I had pretty much leveled out on what I would do with that bike.

But I am excited by it and very vain about it. It's a beautiful bike.