Las Vegas is riddled with cheap automatic car washes and a sign like the one posted here is not uncommon. What does it tell you when you see a sign like this one? The simple answer is: I am taking my car into a torture chamber and I should really rethink this decision. Yet many customers ignore all the warning signs and drive right in, hitting the start button without giving it much thought.
Automatic car washes have a built-in problem. The brushes and bristles that are used to clean your car have been used on thousands of vehicles prior to you pulling into the wash bay. What that means is no matter how well you care for your car everyone else's dirt, grime, rocks, etc... are being rubbed on your car. This is what causes that ugly "spider web" look on your paint. It may even cause some really isolated deep scratches, that FYI, are very difficult to fix.
Here is a picture of that spider web look an automatic car wash can cause on your car. Look familiar?