When the ice caps have melted, your neighbourhood might be permanently flooded, so you’re going to need an amphibious car.  This car can do 160km/h on land and 50km/h on water.  It’s currently available for about $200,000. Also check out this amphibious quad bike for your semi-submerged country estate.

Should we be looking at a Waterworld scenario then unless you can grow gills, you’ll need one of these. The only downside is that it will be quite difficult to repopulate the planet in the back seat of this vehicle.

I wanted to recommend a flying car in this list but unfortunately none currently exist in any commercial form. The closest is Moller’s M400.  It’s a sad indictment on the state of modern society that we don’t yet have flying cars.

On the other hand, if you’re living in the mountains, you’ll need something nimble to evade the hordes of refugees.  While only a concept at the moment, I like the look of the Yamaha Tesseract. Just be careful though, because it might be a Decepticon in disguise.

And finally, if the apocalypse does come, you’ll need one of these. This multipurpose truck can safely carry survivors/fuel/food/cure past the zombies/bikers/mutants/apemen. A must for every home.