that's what i'm talking about, the ammount of cars on the roads (according to this) will have doubled in 33 years. by then you can bet we'll have found newer and faster technology to produce them (which has been done for hundreds of years now, example: people got tired of writing books by hand so they invited a machine, while not as effecient by today's standards still made quite many more than was previously possible and it kept going from there) which will mean that number will jump again and again. in my own thoughts, we just have to accept the fact that we won't survive forever on this world, as before every dominant animal group (dinosaurs, cavement and so on) are virtually or completely wiped out and it starts all over again. history repeats it's self, just not as fast as all those history teachers in school try to make it seem so it makes you think you need to learn history.