You get tired of people driving over your landscaping, so you put a big boulder in the way. Now everyone will have to drive around it. 
It looks like putting a nice boulder there only kind of worked. 
Of course, everyone ought to be able to stay on the road and drive around a boulder, but can you imagine the thousands of dollars of damage that rock did to someone’s RV just to keep them from driving over the gravel? 
It looks like putting a nice boulder there only kind of worked. Of course, everyone ought to be able to stay on the road and drive around a boulder, but can you imagine the thousands of dollars of damage that rock did to someone’s RV just to keep them from driving over the gravel?