All agreed Rog. Of course the cost of train travel is easily justified versus the cost of a single person using a 3.2 Omega, but when there is a family involved the situation becomes very different. To resolve that issue family rail/bus tickets should be made a lot cheaper to encourage them to leave the car at home. But then my point about super integrated public transport really comes into focus, with an easier method of suitcase logistics involved. 
Not necessarily (pro rata) the case Lizzie .. a Family Railcard allows up to 4 adults + 4 children truly massive savings.
Rail travel is the way forwards, as currently being demonstrated in these parts:
Improving the Cardiff & Valleys Rail Network
An Artist's impression of Cardiff Queen Street station
You will soon see work happening at Cardiff Central and Cardiff Queen Street stations, improving the entrances and the addition of new platforms.
This work will also improve reliability and capacity on the Cardiff and Valleys rail network. The £220 million project is jointly funded by Network Rail and the Welsh Government. This will include;
a new platform at Cardiff Central
a new south-side entrance at Cardiff Central with lifts to the new platform
New platforms and entrance at Cardiff Queen Street station
an additional platform at Barry station
improved infrastructure on the Rhymney Valley line at Caerphilly and Tir-Phil
improved infrastructure at Cogan
line-speed improvements on the City Line
a new platform at Pontypridd
An Artist's impression of the new rear entrance for Cardiff Central station
The project, scheduled to be completed by 2015, will ‘future proof’ the railway by increasing capacity for potential future passenger services. It will also provide a more robust and flexible infrastructure in order to maintain and improve train reliability and punctuality.
For free email alerts to keep you up to date and to let you know of any service alterations relating to the project, please visit
www.arrivatrainswales.co.uk/EngineeringWorksAlerts.
For further information on this project, visit Network Rail's website.
Electrification is also looming for the Valleys network ..