Coach and business classes are farther apart than ever before

If you're looking for evidence of a widening class gap, take a look at the differences today between business class and coach on a flight. For those whom Delta Air Lines considers its best customers, the experience may include expedited security screening where you can keep your shoes and belt on, followed by entry into an airport Sky Club with complimentary drinks and snacks. That might seem far different if you've been munching on peanuts in your cramped seat in coach. Over the years, airlines have been squeezing more seats into the back of the plane and have removed some extras like free checked bags and meals. Now, much of their attention is on ever-more luxurious seats and amenities for those up front, where the profits are. On long international flights, some well-heeled passengers are willing to pay upward of $8,000 for a ticket that includes the creature comforts in business class: Those heading overseas in Delta's BusinessElite seats may dine on pan-fried halibut with