Be it a local mt. bike race or blowing thru rush hour traffic in mid-town on your fixed, racing is a blur. Your little world becomes fuzzy as you are flying thru trees or passing cars. You're not making the best decisions. You're like, "screw this, I'm just going to bomb this hill without hitting my brakes" or "I'm going to past all of this traffic by blowing up the double yellow line." You're taking risks and you just don't care if self-damage occurs.
May be your brain is starved for O2, so it's not functioning properly. Who the hecks knows?
I personally love that "racing blur" sensation. That's why I race.
It's like you are almost in another time zone. You don't remember much about your surroundings. All you remember is the hard, physical effort of pushing yourself.
I'm not sure if this makes sense to most people, but if you race or try to outrun the traffic, you know what I talking about.
Just keep your head up.