A 180 mph governor is laughable. You can get just as dead at 180 as at 181 and so on. For that matter, anything over about 120 and you're probably just a mess for the fire dept to hose off the pavement.
I suspect the 180 mph limit has to do with the production tires, just like the speed limiters on most other cars/trucks.
I spent quite a bit of time on the Autobahns back in the good old days with very few speed limits and no photo cameras, and it was frustrating to be driving a very fast and capable car and hit the limiter at a mere 155 mph (typical in BMWs, Mercs, and most others.) While the Porsche driver roars away to top speed with no limiter.
Funny how some companies require limiters and others don't. I'm with the latter group.
I'm also in favor of creating a national driver's licensing law that requires substantial training at a real track driving school before any sort of "advanced speed potential" license would be issued. For all the Prius drivers who want to putt along at the speed limit, the standard license is good enough. But, for anyone wanting to own cars capable of exceeding whatever particular speed (120?) you have to get the advanced license.
I hate the distracted "drivers" in Teslas (aka Prius owners with more money) who don't realize they're doing 70 in a 35 zone, or whipping around freeway traffic at 100+ mph while on the phone...when the combined driving talent of all of those people is less than I had at age ten.
I doubt such a license will ever come to be. But it's fun to think about it.