Legal Question in Business Law in California

Re: car wash

You can't defraud people by falsely saying or implying that the money you receive will go to a charitable or other nonprofit entity. That would be against the law.

Here is an example of an honest fundraising appeal:

http://www.flickr.com/photos/8703893@N08/3427003065/

Re: car wash

Sure, provided you don't break any laws.

The most obvious potentials here for breaking laws would include any misrepresentation as to the ultimate use of funds raised; any lottery or other gaming activity; and any suggestion of tax-deductibility.

I constantly engage in a form of "fund raising" for myself by offering to perform legal services for a fee. I see no reason why you can't was cars for a fee. You may need a business license.