Totally disagree. Used vehicle means it has been titled. New means it hasn't. In fact sometimes cars arrive at the dealership from the factory with 25-75 miles. Manufacturers will randomly pick out cars to quality control. Now if you want a vehicle no one has test driven then I suggest ordering your vehicle from the dealer, but it will still need to go through the PDI process, which requires a 7 mile test drive. But by no means is it false advertisement because it has 15 miles on it. I just ran the vin on the first one and it is an unsold unit in dealer inventory which is considered new.
If you buy it from a dealer and it hasn't been titled, it is a "new" car. We bought my wife's last car from a dealer who didn't have the exact options we wanted, but another nearby dealer did. The two dealerships did a dealer trade, which is common thing. Her car showed up with 42 miles, but it was still a new car. She put another 120,000+ on it before we sold it, so that 42 didn't really make any difference.