Ferrari have long worked with third-party coachbuilders such as Pininfarina. I'm not sure how much autonomy Ive had over the final design, but if it's anything like the relationship with Pininfarina, etc. the design would have been a collaboration.
Though Pininfarina, Zagato and others have a long history of designing beautiful car bodies, many of which have more than stood the test of time.
And the press-release [0] sounds like Ferrari had very limited creative control:
"Introducing a team from outside the Ferrari Design Studio led by Flavio Manzoni invited a new perspective and cross-fertilisation, enabling a new design language to be introduced."
"LoveFrom was given the creative freedom needed to define the design direction of the project from the outset, translating this design language into an authentic Ferrari experience."
[0] https://www.ferrari.com/en-US/corporate/articles/ferrari-luc...
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