I see you're new here, and perhaps new to embroidery as well. Logos for cars, restaurants, chocolates, or absolutely ANYthing are copyright pieces of art. For anyone to digitize them and sell the design, they would have to purchase a license from the company the logo belongs to, and I assure you the license would be expensive, and the design would be as well. You might find some (or many) company logos on the Chinese sites as freebies. My best guess is that those companies have hired the Chinese embroiderers to do shirts, ball caps, some item with the logo on it. The Chinese apparently do not understand or don't respect copyright laws, so they put the design they digitized for that car maker up as a 'freebie', but it is copyright violation for them to do it, or for you to use it. Same applies to Disney, NASCAR, NFL, NBA, etc. etc. etc.
You could just use the letters in your machine to make whatever car manufacturer name you wish. Best of luck, Marji

there are cars on this site.dont know about logos but did find the black and white race flags. Helen
http://www.geothedigitizer.com/

Here are some lego items.

http://www.logotypes.ru/list_e.asp?cat=A

many logo's also opel.

thank you all so much