There's a rather wonderful bit of video over at the BBC News site which is especially fascinating for anyone who lives in Brighton.
Sixty years ago the corp filmed the train journey between London and Brighton and condensed it into a short film. It did the same 30 years ago in 1983 and has just revisited the project this year.
The video then shows the three bits of footage side by side and it is amazing to see who much of the route has changed - and again how much has stayed the same.
The bridges and overall structure of the railway is similar, but the vegetation looks very different. And as for both the staff and the commuters, they look a lot more casual these days.
Check it out here.