Thoughts on Zombie movies.
Well, I'm at home watching Pride, Prejudice and Zombies. And it's triggering some deeply ingrained annoyances I have with Zombie cinema in general. Even though I freely acknowledge that this particular movie is an attempt at satire. I'll ignore all but the last point of http://www.cracked.com/article_18683_7-scientific-reasons-zombie-outbreak-would-fail-quickly.html
So, to begin the ranting....
Outside of the trusty (and not available in Victorian England) Infantry Fighting Vehicle, one thing zombies would seem remarkably incapable of dealing with is good quality body armour. Now, while Victorian England didn't have kevlar, NBC suits, or ceramic plate armour, they did have plenty of old suits of armour (several in the background in several scenes). Now, I'm not talking that stupid, heavy jousting armour (although it would do plenty fine) but the renaissance age plate used for war.
Specially designed for movement, and preventing small pointy things from getting to soft flesh, this armour is a lot better than most people realise. It was only really invalidated by firearms and the sort of bow you need to train the grandfather for. (seriously, the old welsh long bow is seriously lethal but impossible for a normal human to use).
While a lone armoured human versus a giant horde of zombies is probably going to be overwhelmed, it would only take a few armed and armoured to be almost invincible vs any number of zombies.
In movies set in more modern times, we have a trade off of personal armour vs firepower and vehicles. Many zombie movies ignore all military vehicles except maybe a jeep or similar. A few posit a tank or two. But tanks make a minority of armoured vehicles in any modern military. Mechanized infantry vehicles are much more suitable for dealing with a zombie outbreak.
I mentioned the Infantry Fighting Vehicle before. It's basically a tracked or wheeled armoured vehicle with what the miltary call light weaponry. Things like 30mm canon, assault rifle ports, 12.7mm MGs. The sort of weaponry that would dismantle zombies on industrial scales. And, due to what modern military concerns are, most are sealed units as far as microbes are concerned, and would be quite capable of zombie dismantling without the weaponry. Much like the average car could.
Which brings me to cars. Without even looking at trucks, cars are lethal death machines. In most countries car accidents are a leading cause of death. And it's due to basic physics. A one to three tonne lump of metal travelling at 20 meters per second has a metric truckload of momentum. And that much momentum being transferred to a 50 to 150kg soft squishy humanoid lump of reanimated dead flesh is almost incapable of causing quite some structural failures. And contrary to much TV and movie examples, vehicular windows are quite strong. The ineffectual flailing of uncoordinated zombies is unlikely to do much to a car's windows, doubly so if the vehicle is moving. A good solid thump with a swung hard object will break side and rear windows, and crack a windscreen though. But zombies don't typically wield the required impact amplifying devices (I believe they're called clubs). Hitting a jumping zombie at 80+kph will provide enough force to drive it through the windscreen (depending on slope etc). A useful fact if driving near kangaroos or moose. But as zombies are rarely seen using jumping as a motive method, this also seems to be reasonably safe.
Typical road cars won't stand up to repeated use bludgeoning zombies at speed though. It's almost as if the modern ones were designed to dismantle themselves to protect the zombies. But there's a couple of categories of vehicle most countries exempt from many regulations designed to protect zombies and other foot-limited targets. Many commercial vehicles and off-road vehicles have no crumple zones, no airbags (which you must agree would be annoying if attempting vehicular zombieslaughter) and are generally more robust. They have plenty of downsides as well, but these are mostly irrelevant in a zombie apocalypse. Plus the higher ground clearance mean the roos and zombies have to jump higher to be a menace. But do try for a genuine off-roader, not one of those half way things. Some of them have safety features.
But quite frankly, without vehicles, guns, a handy supply of full 16th century gothic plate, or any of that, it's still pretty hard to see how even hordes of slow moving, brainless zombies could over run a few people who didn't panic. Long sticks are your friend. A circle of people with broomsticks could hold off the zombies shown in most cinema. The Romans had anti-zombie tactics perfected 2000 years ago. And we're supposed to believe (or pretend to suspend disbelief) that modern military forces would be outmaneuvered by them?