Isn't it more like a 4-year-old car, since most 2019 models were built in 2018?  The current 2023 models include the "Summit Reserve" priced at $70,435.  I also notice the GVW is 6,050.  I wonder what they had to add to get it over 6,000.  

Maybe this one has a snowplow attachment.  There was a Tax Court case recently where the judge didn't allow the vehicle expense because there was no mileage log.  But he allowed the full cost of the snowplow attachment, because you don't have to keep a log for that.  Or maybe he allowed 90% of it, because the taxpayer used it occasionally to clear his neighbor's driveway.  You could look it up.  

And I noticed your edit to correct "Kelley Blue Book."