Welcome to the wonderful world of ceramic coatings. You can usually tell by how water beads, the shine, and if it feels almost unnaturally smooth & slick. The fact that tape won't stick is a good indicator.
How tough it is to remove depends on the quality of the ceramic they used, professionals use the good stuff, and it's stubborn, the lower-mid-grade DIY type stuff is pretty weak, and what dealers usually use to prep new cars, because they're cheap. Since it's a new vehicle, my hunch is it was done at the dealership with the lower quality stuff during prep, pro coatings cost a lot! More than municipalities will spend on a cop car that's just going to get beat to hell anyway, or a dealer will just throw in (unless they owe the department a lot of fines, lol).
If it's the lower grade stuff, Iso will soften it and remove it, but you'll need to have a microfiber saturated with alcohol followed by a dry towel, and keep going over and over it till the coating is gone. If it doesn't get it all, you may have to machine polish after that to get what's left, or clay bar it if yer' ambitious. The pro stuff you pretty much have to wet sand and buff to remove. They do make chemicals that remove them, haven't had to try em' yet, but they're out there.
Good luck
