Carrying on with the longest motorway in the UK... the M6. We've covered junctions 1 - 13 in episode 1 which saw us go from Catthorpe to Stafford. This week, we pick things up in Stafford at a rather nice castle before heading north on the M6 motorway towards Warrington. As always there are several stops on the way and we take a look at a few things that maybe you didn't notice last time you drove the M6. In this series we aim to explore what our motorway network is hiding. As we drive along at 70mph..ish...we simply just wouldn't be aware of what we're missing. This series aims to uncover some of the hidden secrets our motorways have to offer.