Maybe I'm reading much too much into the image. I see innocent days. A blonde child, a shaggy dog, a jeep with the steering wheel on the right side. Paul and Linda by the sea wearing their wellies and socks, perhaps matching wellies and socks. The guard rail kept them from falling into the frigid waters but it didn't stop life from moving forward.
He was so charming, so incredibly successful. She won his heart. They had it all. But they didn't get to live it out. Maybe it wouldn't have lasted. Maybe their life together, lived in the glare of the headlights, would have unraveled eventually.
But here by the sea they are frozen in a happy domestic moment with their child and their shaggy dog and their wellies.