I rode with an expro rider from Italy once. He was visiting a friend of mine in San Gabriel California and he brought his bike with him. He asked me if I knew of a good ride to go on. I took him on the San Gabriel river bed. He had no water bottle, he spun his 42 chainring throughout the ride and never looked tire. I gave it all I got just to try and stay with him, but I couldn't, it wasn't possible. All the really fast rider out there that day, he chased them down without any real effort it seemed. His comment to me after the ride was that I had heart but lack a motor. Best advice I ever received, from that point on I worked on my paceline riding a little more diligently.