While it may seem trivial, you'd be surprised at how much people don't know there surroundings. So, if you are always between point A (home) and point B (work), every day or as time allows, try a different route, make note of interuptions - such as the bridges, or trains, or pending construction. Stop by a visitor's bureau and get some maps and tune into what could be coming up (events, etc) that may disrupt travel along your regular route and between points A and B.
Also, review of what would be needed if you had to make that trip and if it were to take several days - protection, food, water, shelter. You might take a weekend and test some routes or camping out between point A and B. the "test weekend" might allow you to better prepare your GHB to insure it's usefullness.
Ask yourself do you need extra clothes that might be more rugged than your normal clothing? how about shoes vs boots? seasonal weather may throw a hiccup too. For shelter, what would shelter require for you? bivy/blanket/rain fly/heavy jacket? Each person and every AO is different.
Now for food - MRE's are good, but they are bulky - would freeze dried food serve you better? that might require a stove. You might consider the super energy bars or survival bars - things that back a days worth of calories in a small package. You might also want to consider stimulants or energy gells to supplement your adrenaline. For water, you should have several quarts with you but also be prepared to purify additional water.
First Aid Kit - you want to cover the basics but do need to be prepared for emergencies. You may want a more involved "trauma" kit in your vehicle just in case.
Search around on the site and online - eveyone has a different list of things to include - reviewing these may help you realize a need that hadn't materialized at first. They may also mislead you to carry additional crap that won't work for you or your AO.
don't be afraid to post more questions.
Mike