There is a question What would happen if I exceeded mach 1 over a regulated area?
I wonder, could anyone in civil aviation (not military) actually carry out this violation? I know there are privately owned "warbirds", but it looks like the majority of them are really old. The "never exceed" velocity is defined well below Mach 1 for majority of these planes.
Are there any cases known where someone non-military owns an aircraft that could exceed the speed of sound and then land at least mostly in one piece?
Let's limit the scope of the question to USA and Europe.