The rise of the mega-city
All the projections point to the global population continuing to increase, with a disproportionate number of those people ending up in cities, many of which are already jammed up with traic. Legislation can force cars to get cleaner, but clean traic is still traic. The solution is likely to involve alliances between car makers, city planners and public transport providers, with their competing agendas.
But of course not everybody will live in cities, mega or otherwise. How connected will rural Norfolk or Cornwall ever really be, let alone Siberia or Bolivia?