Hold on with the silly Brands of the World nonsense, please. BOTW often has logos of suspect quality. User beware.
In the case of AutoNation, it took me only a few clicks to find official corporate artwork, in EPS format, right on the AutoNation website. http://corp.autonation.com/about/market_brands.asp
Choose the "click for more brand images" link and it will take you to a form page where you can choose the brand you want (in this case, the AutoNation, brand). The form page gives you a number of options to choose on color and file type. Click the search button and it brings up a page with the relevant files ready to download.
Still, if you're doing a job for AutoNation -get in touch with the appropriate folks and ask for their logo use guidelines.