The speed that Pro racers can make and hold is completely outside of the understanding of normal riders. When you see these play-racers standing up and passing you at 2 mph faster than you are going (25% faster maybe) you know that they are play-racers. Watching Pro's go up an 8% grade in the big ring and small cog is staggering. They actually ride near 40 mph for hours.

So I have quite a disgust for play-racers whose interest is in passing someone they can see ahead of them. It's like driving on the freeway and watching someone drive 20 mph over the speed limit just to catch up to the traffic jam ahead of you.