Ferrari driver Charles Leclerc said the "porpoising" sensation in new Formula One cars is like turbulence on a plane and that it made him feel quite ill in the opening preseason test.
F1's new cars displayed one very odd bit of behaviour at the first test in Spain, as they bounced up and down on their suspension when reaching top speed down when driving in a straight line.
One video which went viral was a slow-motion of Leclerc's Ferrari bouncing violently as he drove down the main straight at the Circuit de Catalunya.
The sensation has been dubbed "porpoising" as it looks like the movement of a propoise as it travels through the water.