The M4 beckons

I will be in the car by ten-thirty.  I'll drive through the heatwaves of Swindon and Bristol, across the beautiful bridge into and through the swampy horror of Newport and the blandness of the new Cardiff bypass, until it all gradually fades down into the soft, shrugging and smiling oldness of Carmarthen, before it all dwindles into the road down from Red Roses into Wiseman's Bridge (careful down the hill, 4x4s whoosh up there as if it was the M4) - and then I'll find out - and this is the best bit - I'll find out whether the tide is in, or out, or halfway.