Recreation vehicles, RVs, are a good indicator for the health of the economy. RV sales show strength in consumer spending, consumer confidence, and availability of financing.
Sandwich panel manufacturer AZDEL recently announced that with the recent upswing in RV demand, they have increased their capacity to 20 million pounds (100 million sqft). Source
By my calculations, this means their panels are weighing an average of 5lbs a square foot, which is a seriously robust panel… With weight being so important in transportation, perhaps new materials will soon help Azdel shed some of the extra pounds.