Following another car and overtaking "as hard as ever"

Renault driver Nico Hulkenberg says that it is more difficult than ever to follow another car and overtake, even though efforts were made to improve the 'dirty air' problem.

Drivers have struggled to follow each other for years now and F1's owners Liberty Media tried to sort this issue with a few rules changes ahead of the season, but it doesn't seem to have worked.

When asked by Autosport if it had improved, Hulkenberg said: "I feel it's as bad as it's ever been, to be honest.