What is the story analysis of summer anniversary by chas adlard?

â??Summer Anniversaryâ?? by Charles Adlard is a short story about a wealthy man who stops one day at the beach in a luxurious black Mercedes, He constructs a tarp for privacy over the back seat, then engages in a one-side conversation with a lost love, drinking a toast to their happiness. Hours pass, many observe the lone Mercedes but none care enough to investigate further. Finally two fisherman who had seen the car pull up earlier, discover the tube that funneled the toxic fumes and his body.