Re: Would you survive?
If the arrow penetrates the skull, and the user can pull off that shot at a useful range, then it's good. I can't hotwire a car, but as I said before, I would be pretty wary of using a hotwired vehicle anyway. In the event of a stall, which is more likely in the non standard conditions you'd be facing, how long is it going to take you to get it started again? As for roads, I don't see any real reason for them to be blocked. Police barricades maybe, but unless they used concrete slabs for some reason, is there anything to stop you dismantling or pushing through? The claim that cars would be randomly crashed all over the roads is ridiculous too. No zombie is going to leap off the side of a road and manage to stop a car doing 60. Any other cars, if we imagine infection can be slow for example, are going to most likely slide off the road. If not, drive round, or in the most unlikly of cases, nudge the non parked car and push the bugger off the road. No problem. Plus that's going to be one zombie hilariously stuck in it's seat belt behind car doors it does not know how to open.
I would definitely be sure to give a quick tutorial to anyone entrusted with a gun though. One friend of mine, when given my P90 to hold, held it at first practically by the flash hider. If it was real he would have blown his hand off first shot. Another held my shotgun left-handed (which he is not) and stocked it under his armpit while trying to bend his head down to look through the sights. And also, I'd make sure everyone understood the dangers of the exhaust port, and to pay attention to their safety modes. Another friend, who I regularly airsoft with and is far from a gun noob, one day decided he wouldn't bother with the safety on his T77 he was carrying as a sidearm, so that he could bring it into action faster. A few hours into the game, and from behind me I hear a rapid set of shots followed by multiple rapid swearwords. My pal had just caught his gun on a shrub while taking cover and let out a 10 round burst into his leg at about 2 inches range. He got out of it with a bleeding leg and alerting the enemy to the rest of us. In this zombie scenario, it would be a missing leg and a horde of zombies instead. Seriously, use the safety.
On the subject of pistols. Even a .22 round will penetrate a skull at short ranges, or at least send deadly shards of bone into the brain. A 9mm is more than sufficient, and personally I would very much avoid unnecessarily large calibre pistols. There is good reason why militarys don't use the Desert Eagle for example. Over rated weapon of the century. You lose fire rate, control, ammo capacity, it is heavy, too large to fit in standard holsters, and after a long period of use wrist pain can set in. I would opt for a practical pistol, something that won't fly skywards with every shot. Pistols should not be ignored for there is no better defence in a close call. Granted, trying to pop off hordes at long range is not going to get you far, but just about any fool can effectively aim a pistol at short range, even for a head shot. The users ability to handle the recoil will determine their real effectiveness. I took part in an airsoft practical shooting course a few months back, basically racing through an assault course and taking out various targets as accurately and quickly as possible. I did pretty well for my first time. If I could handle the extra recoil of actual bullets over over the propane powered guns we use, I would be able to empty a room of zombies pretty swiftly.
Oh yeah, I forgot to ask something when you mentioned it earlier Sinfulwolf. What's wrong with a Glock? I've not really heard anything bad about them before.