Boris has Country Lane Syndrome. Our tourists get it every summer. They follow the GPS and turn left into a lane . . . It gets narrower . . . After 100 yards, grass is growing in the middle . . . Reverse out now or hope for a layby? They always go on because a 100-yard reverse is too hard. The hedges get taller; the lane gets narrower; the muddy strip in the middle gets wider. No layby; no junction; keep on going . . . Eventually, just like our Prime Minister, they are stuck in the mud with no way out.