The fight for this year's Formula 1 world championship has all the ingredients to be a true classic.
The closeness of the battle between Ferrari, Mercedes and Red Bull makes it hard to pick the winner before each weekend, and the fluctuations of form mean no driver has managed to seize the initiative in the title chase. There is little reason to think this isn't going all the way to Abu Dhabi.
But just as the highs of a late-night party rarely happen without the lows of a hangover the following morning, F1 is finding itself facing a bit of pain from the good times. In the case of the 2018 season, it's the lack of overtaking that's causing the headache.