If you watch traffic maps online or listen to radio reports, the earliest freeway snarls are often out in western Riverside County where commuters get up early and begin slogging toward Irvine or Santa Monica on the 91 and other routes. A new study out there predicts a horrendous future of delays and pissed-off drivers. The study concludes that 652 new lane-miles of freeway — costing $8 billion — will be needed just to keep up with expected population growth by 2030. Vehicles travel 20,960,532 miles every day now, a number expected to soar to 31,469,853.