You’ll be hopped up on cocaine trying to offset the painkilling effects of the opioids, so you can maintain the necessary concentration to install a nightvision cybernetic enhancement directly into your eye, when a once domesticated hungry dog stops by and sees you as a regrettable alternative to starving. Knowing you won’t survive the encounter in your current state, you throw a grenade at it just to be on the safe side. Except, you didn’t throw it cause in your euphoria you decided to take a little micronap.

Or: you build a freaking TANK powered entirely by an array of solar panels. It doesn’t move very fast or far given its power source, so you just let it roll forward on its own while you read a book from before the cataclysm about How to Win Friends and Influence People (in case you ever actually meet anyone). While you’re reading, you accidentally crash at 5mph into a wall. You get out to repair the minor damage, and a zombie grabs you, and hundreds more are spilling out. If only you were in your tank...you bludgeon the zombie with your book and think about how to Win Friends and Influence People.