Jet Blue Airways brought its rolling aircraft cabin to Hemming Plaza Tuesday to show off the new improved-legroom layout demonstrated above by Oliver Piazza. Jet Blue’s planes also feature 36 channels of DIRECTV and satellite radio at all seats. The visit was part of a nine-month tour that will stop at all Jet Blue cities, according to Tour manager David Saracino. The exhibit will be at the University of North Florida Wednesday, then it’s off to Houston on the way to the west coast leg of the tour.