Ask HN: How does Amazon know the car I'm driving

I do not ever remember telling Amazon what car i drive. I was searching for some car related stuff and a message was shown at the top: "Filter results by your vehicle followed by (My Car Make + Model)". Further googling gave me this result: https://www.amazon.in/adp-auto/garage

I never purchased any car related stuff on Amazon before. Neither do i have any Alexa related stuff at home.