Do not, I repeat, do NOT get stuck in traffic behind a chemical spill. If you must get stuck in traffic behind a chemical spill, do not do it on 128. If you must do it on 128, do not do it on Friday afternoon. If you must do it on Friday afternoon, bring lots of good music and a cell phone with a headset. Prepare to catch up on gossip with any number of people. Expect to arrive at your destination quite late.