You’re about to go down a fun, deep, and expensive rabbit hole.
Yes, they all exist and are fabulous. As I do related work, I have accumulated various libraries with more than 100K sounds together, which is only a fraction of what others use and exists.
Regarding car sounds, there are libraries for every specific car model, various vantage points, interior and exterior. Pass-bys at different speeds in 10mph increments, ignition on/off, button pushes, door close/open, etc. etc. You need a sneezing penguin, that exists (I once needed that once). All professionally recorded.
You’ll also quickly need a library management software - Sound Miner used to be the king of the hill, but a lot of folks now use Soundly, which conveniently comes with it’s own cloud library that may be the first and easiest place to start with.
Other big purveyors of comprehensive libraries are ProSoundEffects , Boom Library and A Sound Effect.
Several of these also have subscription libraries or pays as you go online libraries. A good way of using ProSoundEffect is to buy one of their base libraries for the average stuff and then buy as you go for specific sounds, which are $5/ea.
There are also a long list of smaller specialty collections you can find via Google. But these four should get you there most of the way. The only question maybe, how good is your Amex. These libraries aren’t cheap, depending on size they run between $200 - $5K a piece, which though gives you royalty free usage licenses. Pricier if you need the surround or ambisonic editions. The Soundly subscription is a much more basic but affordable starting point.
The option of course is to collaborate with a sound designer who already has the libraries and practice on how to search them and use them. You may need to EQ them or add reverb to properly integrate them into the scene, at which point you may start buying more expensive plugins and Impulse Response (IR) libraries to drive the reverb for the specifics of your scene.
Happy to do a Discord screen share to answer questions and show you.