Why SUC number plates?

So what's the big deal about the letters SUC?

Take a look around. All the SUC number plates are gone. There are very few available for sale.

Why?

Is it about manipulating the C to make a SUE number plate? We've all seen the use of screws and black tape to change number plates to make a name or word. It's illegal, of course - and the police are beginning to get tough on it.

That aside, is there something else I've missed? I'm bemused.

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