It’s not a new truck. It’s an existing truck with a new powertrain.
If you look at the new truck listings, you’ll see that some of the pictures were taken at a Kenworth dealership. It also says that the trucks are “Limited Edition.”
And owning a franchise dealership means having contractual agreements with Toyota’s corporate department, which comes with connections.
You don’t just get 3-year old trucks with less than 400K mileage (some as low as 161K mileage) without special interests... IMO