
Why would the car owner do this? I'm sure that answer is personal, but it's probably related to budget and hard-headedness. If asked, he'll say "it works fine". That's because it has not dismounted under freeway wind pressure yet. "Yet", it will in time.

We offer advice and installation service on the rack systems we sell for this exact reason. This owner has not been informed of the consequences that will happen to him in time. This is unsafe. Our certified technicians would never suggest this, and the driver following this guy wouldn't get a big surprise.
We do good things. Let's do them more often. Find these people and help them.