I've read quite a bit about other products launches here on Indie Hackers, so I went with a post on Product Hunt first. To my disappointment, it didn't produce any substantial results. Probably no one was interested in the product =\
Then, being a Reddit user, I thought it would be a great place to share my website. And it worked out great! The post is here: https://www.reddit.com/r/cars/comments/ctweii/i_made_a_website_to_follow_car_brands_social/
I got quite a bit of upvotes and the post is still on the Hot page of /r/cars, and though there aren't as many visitors today as there were yesterday, the feedback was very positive.
Today I've managed to quickly implement some of the ideas people shared in the comments, like the dark mode, or scrolling on Ctrl+drag, and there's plenty of work remaining!
Still thinking about marketing the website, not sure how to go about it.