When you’re stuck in a traffic jam this evening, bored, frustrated, and maybe a little lonely, look at the cars around you. Most contain a single commuter who is also bored, frustrated, and maybe a little lonely, going in the same direction at the same, slow pace.

How about tomorrow you share a ride, leaving one fuel-guzzling, road-clogging car at home while you socialise on the way to work and split the petrol and parking fees?