Why does F1 have regulations?

'Unbelievable to see the number 1 on my car' - Norris reviews 'good' first day on track in Barcelona

Sergio Perez 'enjoying the challenge' of new regulations with Cadillac

Hamilton reflects on Ferrari's 'remarkable' journey at Maranello launch

Charles Leclerc: 'One of the biggest changes that has happened in F1 history'