THE CAR EXISTS TO MAKE YOU FAT AND SULLEN:

The University of East Anglia study surveyed 18,000 passengers and found that even when other factors that may affect wellbeing were taken out of the equation commuters who travelled to work on public transport were happier (that is, scored lower on feelings of worthlessness, unhappiness and sleeplessness) than those who drove. Key to it all is what public health experts call "active travel". Drivers are choosing a "non-passive travel mode" requiring constant concentration. This can be boring, isolating and stressful. Active travellers, on the other hand, have time to relax. The simple walk to and from the station appears to have intrinsic value. As the UEA economist who led the study put it: "It appears to cheer people up."

While we're putting things simply, apparently the people who chose to take public transport were around half a stone lighter, too - the bodyweight benefits were found to be on a par with cycling. 

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