Heading east from London? Visiting the Docklands, Lakeside shopping centre or Southend Pier? Take Billy Bragg's advice, then, and hitch a ride on the A13.
There's almost no evidence of Liverpool's 1960's plans for an inner ring road on the ground - but the motorway that never materialised would have been astonishing. The full details on the route, and the missing part the M62, are here.