I have personal experience of the French police arriving at the business premises where I worked on a few years ago to enforce the payment of a fine which had been hired by one of our employees and had been caught speeding in Switzerland.

I have also been told by someone whom I trust that he had been refused permission to catch his flight until he'd been to the cash point in the airport and made a withdrawal sufficient to pay a speeding fine to the police at the airport because he'd ignored written reminders that he'd have to pay his fine on several occasions hoping to slip out unnoticed.

PAY UP. Be the adult in the circumstances. You were caught. We all hope to get away with this sort of thing once in a while. But you didn't. PAY UP. JOB DONE. RETURN TO NORMAL LIFE.