Strange how this topic drifted from Swedes driving American land barges to the Stars and Bars.
While I despise "me too!" posts, I'd have to agree with El Guapo. Despite claims of "Southern heritage!", most of the time a S&B is displayed prominently, it's usually in the context of something racist, such as a Klan or White Pride rally. Consider that historically, the S&B kept a low profile until the civil rights movement of the 1950s, when it made its reappearance in various Klan meetings and state flags of defiant Southern states.
Someone may display it as a symbol of "Southern pride", but that's not how the majority are going to view it. One could excuse a bunch of Swedes for displaying the S&B on their Web site, because they don't know how the display is interpreted Stateside. Still, though, Volkswagen fans know better than to assemble under a waving swastika.