 AAA forecasts that most Americans, close to 90%, will travel by road this holiday. These trips cost Californians the most, with gas in an average of $4.80 a gallon. But overall, prices are down about six cents. A travel nightmare in Canada, the country's second largest airline, has canceled more than 800 flights, affecting more than 100,000 passengers. There's an unexpected strike by WestJet plane mechanics. It's now entering its fourth day.