Formula 1's Most Interesting Testing Tech: McLaren's Diffuser, Mercedes' Scalloped Floor + More

From Mercedes' unique response to Formula 1's 2021 floor rules, to Ferrari's hidden serrated vanes and McLaren's loophole of the new diffuser regulations, a lot was seen for the first time in F1's shorter pre-season test in Bahrain. But what were the most interesting new technical parts unveiled during the dusty weekend? Jake Boxall-Legge takes a look at the new tech featured on the Mercedes, Red Bull, McLaren, Ferrari and Alphatauri cars in the leadup to the 2021 F1 season opener, also in Bahrain.