I hope they get relief soon. I seem to recall driving from Venice to Nice in a torrential rainstorm. We got some relief from all the tunnels along that route. I generally don't like long tunnels as I'm a bit claustrophobic but was very grateful for a bit of relief from the rain. We thought of turning off and staying the night somewhere but there was so much water on the sides of the road we were concerned the car would be covered in water.