It could have been the end of advertising!
With the increase in car adverts on TV and cinema in recent years almost every other ad is for some new flash car (although you’d be hard pressed sometimes to recognise that the bizarre video you are faced with is advertising anything!). Whilst the car adverts are increasing, the petrol supply needed to run them is declining and if it wasn’t for the growing alternative fuels market then we could have looked forward to a time when all the advertising is for cars at the same time as the oil runs out leaving us with nothing to drive them on, hence no cars, hence no adverts at all! Then there’d really be nothing on TV worth watching :-)