Just recently I was casually riding in a local park just cruising along (in jeans, T-shirt, and tennis shoes), when a guy on a brand new Felt road bike with his full team "kit" passed me as we started a hill. I said "Hi" and kind of waved but he just glared at me and stood up to (apparently) really put the hammer down. I increased my speed some and easily kept up with him on the hill, all the while comfortably seated and pedalling at low rpm while he was standing and cranking so hard I thought maybe I had stumbled upon an organized race I hadn't heard about. We were only going about 17. Then on the down hill he continued his frantic pace, glancing back occasionally only to see me right behind him. I thought about passing him but it would have just been awkward for us both.