The link below (may require a Facebook login) is to a
BBC» Wales news report from this day, 23rd August 1966, about the imminent cessation of the lesser known way to take your car across the Severn Estuary, prior to the opening of the Severn Bridge.
The Aust Ferry is the more well known pre-road bridge service. That sailed across the estuary from Aust to Beachley.
The alternative, and considerably more expensive at the time, was the Severn Tunnel car ferry service operated by British Railways (it began under
GWR▸ in the 1920s). This ran between Pilning and Severn Tunnel Junction, with motorists driving on and off flat bed rail wagons for the 5 mile trip under the estuary. A sort of very short distance Motorail service.
Prior to the service ceasing the fare for a car one way was 27/6, plus 2/- per person. 27/6 would be around £26 today. A return for a car was 42/6. That's about £40 today. The bridge when it opened was 5/- for a car for a return crossing. £4.75 in today's money. Of course the bridge crossings are now free.
https://m.facebook.com/story.php?story_fbid=866748903698141&id=100865096953196