You don't have to look far to see that our economy is back on track. On the highways alone you see new trucks, new cars and a lot of new RV's. In fact some RV Dealers report business has increased by as much as 50% over the last year. And that's a great sign of a recovering economy. It shows that people have discretionary income.  "We've just had a record-setting sale," says Mark Magnacca with Sprad's RV on South Virginia Street. "We sold 160 units in just 10 days...