2021 Freightliner Cascadia, Detroit, DD15, 400HP, 12 Speed Autoshift Transmission, Sleeper, , , Stock # 1827506 New Arrival, Photos coming Soon... 2021 Freightliner Cascadia Sleeper, Detroit, DD15, 400HP, 12 Speed Automatic, Double Bunk, Fridge, Inverter. Stop by or give us a call for more information. RTC Charlotte. Price does not include state and local taxes; tags; registration or title fees; dealer-imposed fees, including document preparation, processing or servicing fees, or any optional equipment or upfitting work selected by buyer. Valid while supplies last. Images shown may not reflect actual vehicle.