The 49-year-old is currently Armstrong’s trainer, who races for Chip Ganassi Racing in the IndyCar series, having previously been the physio of seven-time F1 world champion Lewis Hamilton.
Cullen proved to be an instrumental figure in Hamilton’s success when the pair first teamed up in 2016, with the Brit adding four world titles during that time.
The duo ended their professional relationship in 2023, but Hamilton has insisted that they remain good friends and has given extensive praise for the Kiwi, stating that she belongs in the world of motorsport.
How is Cullen fairing in IndyCar?
Cullen teamed up with Armstrong in March this year and has bene influential in her compatriot’s recent up-turn in form, with the 23-year-old achieving two fifth place finishes at Thermal and the Grand Prix of Indianapolis.
However, Armstrong endured a disastrous debut at the Indy500, where he suffered an engine failure and was forced out of the race after just six laps.
But Cullen did not let the result dampen her spirits as she posted on social media to reflect on the experience, insisting that the team ‘will be back’ and will learn from the weekend.
And taking to her Instagram account again, the Kiwi shared a sense of empowerment with her latest post, while also possibility hinting at a feeling of loneliness following her move from F1 to IndyCar.
Her caption read: “I stand alone.
“Not because I am alone. But because I am strong enough to stand alone.”