How important is your domain name

I am going to buy my domain name and wanted to get some tips on what would be a good name to get the most eyeballs.

I will be starting a automotive podcast where I discuss everything from the latest cars to changing your oil.

Does the Domain name really matter? Every name I have thought of seems to be taken

I would say its as important as the topic you are discussing on your site. The domain name can help with SEO and google ranking but it really comes down to the SEO on the website