Road rage with hit & run: 71 Highway southbound: Driver cut me off then slammed on brakes when 3 lanes go down to 2 (63rd Street exit). I switched lanes prior to hitting their car. Driver tried to speed around me and was unable due to high traffic. When a lane opened up (Meyer Boulevard on ramp), driver caught up, switched lanes too close, and hit my side mirror, flipping it forward. I thought for a moment something was thrown and hit my car. I followed the driver to get plates and ended up at a stop sign (75th Street) where the driver got out. I asked for insurance information. The driver threatened me, stating he works for DMV so he knows where I live, then continued to get back in the car and backed up on me, thankfully stopping before hitting since there was a car behind me as well. The driver finally took off.