If driving to Cardiff from the north, I recommend going down the M50 and then A40 to Newport to pick the M4 up there, rather than going over the Severn Bridge
not only do you save the toll fee, the A40 in Monmouthshire is a lovely road
( h3donist tryin' to play me out as if my name is Sega.., Thu 9 Jun 2011, 23:11, archived)