Sounds like BS to me unless they have the speedometers turned off (disconnected until they sell the vehicles). I think mine had about 35. The mileage on ANY new car depends on how many times it is driven in the "demo" mode. My dealer would let me drive any one they had on the lot and so I did drive 2 others besides the one I bought. The first two drives were just to see if I liked the car. Then I got around to picking my color and of course, I did a quick test drive on that one as well.
My salesman gave me the car to drive by myself which I really liked since I didn't have to listen to him yacking about the car while I was getting acquainted with Ms Eos. In my experience, some salesmen operate in this manner and some come along to ride shotgun.