Google Transit Map UK

Google Transit Map UK - Real-Time Transit Information

Nothing new but a UK first, data from Traveline Southeast
for the Map above

Shame Transport for London (TfL) cannot make use of this.
They have the feeds (rss based) now.
Automatic Geocoding has undesired results (some outside the UK)

There is good coverage particularly in California, US
see more transit areas
http://maps.google.com/transit

Why only the South East?
It's all down to sources, currently only Travel Line have there data in the correct format for Google to read and be able to map it.
It's early days for this in the UK, hopefully National Rail and Transport for London & others start providing this information for third parties such as Google.
try:
http://googleblog.blogspot.com/2008/01/public-transit-made-easy.html

Transit Feed Specification is available here
http://code.google.com/transit/spec/transit_feed_specification.html
hopefully this blog gets read by the companies to make it happen.
Again there will be copyright and legal issues on what can be done with the data