Port Hercule to Vieux Port in 1h15. The full Riviera panorama, no motorway.
The A8 from Monaco to Saint-Tropez crosses the entire Riviera. In F1 weekend or summer, expect 3h+ of stop-and-go.
1h15 coast-to-coast. Pass Cap-Ferrat, Nice, Antibes, Cannes, and the Esterel from the sea. Arrive relaxed.