I think it's a slow process of "upgrading", so to speak

The A4, aka The Great West Road, goes right past Silbury. Right where it meets the A361 ...

http://www.strum.co.uk/watcam.htm
http://www.pberry.plus.com/ ukroads/roadsby10/a361.html">http://www.pberry.plus.com/ ukroads/roadsby10/a361.html

We like, and need, to move about. And go interesting places ...

actually, that second site is quite amazing ...
http://www.pberry.plus.com/

I never knew there was so much in it. It's like the TMA, but for asphalt fiends ...

RG