Why 2021 Has Been "Brutal" For Drivers Who Changed Teams | Formula 1

Formula 1 has been particularly challenging for drivers who swapped from one team to another over the break, but why more than usual? Jess McFadyen takes a look at the many reasons why Sebastian Vettel, Fernando Alonso, Carlos Sainz Jr, Daniel Ricciardo and Serio Pérez are finding F1's 2021 "brutal", from testing time to unique tracks like Imola and even confidence.