Some friends and I are trying to legalize our car club name. How can we accomplish that? And how much will it cost?

The logo can be copyrighted through the US copyright office. You can do it online and the cost is $35.00 I believe. You can apply for a trademark for the car club name through the Trademark Office's online website as well. But there are few things to think about: Who will own these rights? Is the cliub incorporated ? If it is then the corporation should be listed as the holder. If it is not incorporated then you should do so prior to filing. If you have a brand name in the club name, you may not be able to obtain a trademark for your club name.

In addition to Oscar's right on the money response, you should review the responses to a very similar question previously posted here: http://www.attorneyqna.com/legal-answers/what-kind-of-trademark-do-i-need--40732.html