As a cyclist I suggest that a smug chuckle and a sensible glance in the rear view mirror from the driver are all that is necessary. Perhaps with a satisfied slurp of cold or hot beverage from a large insulated mug. I will laugh with you at such an auto-fart. All this running over bicyclists shows a youthful lack of attention and class I expect from diesel burning friends who buy nice equipment from the fruits of their valuable labor.