So here in Chicago the cabs are plentiful and could pretty much care less about bikes. While commuting to work today I was cruising down the right side of the street. A guy was trying to hail a cab about 50 yds ahead of me. A cab in the left lane behind me sped up, cut into the right lane, and proceeded to veer toward the curd while cutting me off (causing me to have to make an emergency stop). Really dangerous. Really obvious that he saw me and knew what he was doing. All for what, a $7 fare? Anyway, that got me to thinking. This may be really bad, but I want to tape a wrench or screwdriver on my handlebar or frame. When someone consciously endangers my life, I want to grab it and leave a nice little mark in their car.