Just to be clear, that Dynamax is built on a Freightliner M2 truck chassis-cab, but that is the extent of Freightliner's involvement. Dynamax is a subsidiary of Forest River and buys the truck chassis from Freightliner, then builds the "RV" onto it.
As an aside, you cannot get a coach built on the M2 truck chassis serviced at the highly regarded Freightliner Custom Chassis factory service center. FCCC is the motorhome chassis subsidiary of Daimler Benz, and RVers are sometimes surprised to learn it is a totally separate corporation from Freightliner Truck. However, Freightliner OASIS dealers handle both in their service shops.
The few I've had a chance to see were gorgeous!