Discription of Events: Couldn't stay in lane, drifting in & out almost hit side of car several times. Car in front of her was slower than L lane, so she cut off car behind me & tailgated literally only an inch away. She weaved in & out of traffic driving approximately 85 or 90. Slams on breaks when couldn't switch lanes so passed on Left side of shoulder. Kids are all getting to school at this time. The most erratic dangerous driver I've seen yet & I'm 34!!!!