I dunno, boss man. I've watched Vanishing Point 5-10 times a year over the last 20 years. I love the message the movie has. It sort of parallels my own life in that no matter how hard I try, I still fail. But in the end, when the world has gone to shit, I am still the master of my own destiny and no matter how hard they try, no man can deny me my eternal freedom or my soul.
For what appears to be just another 70's car chase movie, it is surprisingly deep in subtext. You have to watch the UK version where there's an additional 7 minutes where Charlotte Rampling plays a hitch-hiker who is, well, to me anyway; a very clear allegory for Death.