The A12 autostrada and the old Via Aurelia (which ends up in Arles in French Provence) take you to Tarquinia.
The Via Aurelia stops 100 miles away from France.
mnli hypothesis: The Via Aurelia stops 100 miles away from France. premise: The A12 autostrada and the old Via Aurelia (which ends up in Arles in French Provence) take you to Tarquinia.