For this weekend's Canadian Grand Prix, McLaren have introduced a revision to the front wing design of their MCL39 with what they call "mermaid tail" to the endplates.

The recently revealed 963 RSP and this year's 24 Hours of Le Mans remind us of other road-legal retrofits based on Porsche race cars.

McLaren continue to bring the heat to its F1 competition by introducing "mermaid tails" in Canada — but what will they do?