Horde Survival Vehicle - Iterations & Detailed Sketch

For this stage of the process I don't have much to say. It's mainly a step where I let my creativity flow, well I don't think that much and just draw whatever I find cool or that I consider might work within the high concept. 

I started making a detailed sketch which, in the middle of the process, I figured might not be the best way to approach it. So I took a step back and iterated, even though I quite liked how the design was coming together. This was the beginning of my sketch (and my first two iterations):

These are all the finalised iterations:

While designing all of this, I kept in mind my demon's weaknesses, plus some other aspects: 

- They are small so the car would have to be armoured mostly in the bottom part

- my driver is a religious and excentric person, so wether or not crosses or angel statues would help in any way against the demons she would probably have some of those as ornaments on her car

- She needs a weapon, something to fight back

- my demons are sensitive to light

- the driver is not an engineer so the car will obviously look put together from scraps

The last three I didn't like much. The first two on the last row look a bit like race cars, or like something that might have come out of Mad Max, so they don't fit my concept, while the last design is too plain. 

I really like the second one on the first row, but it somehow looks a bit like a small train and doesn't fit my driver's personality and the concept I have in mind that well. The third one is also nice and I kinda like the idea of an extra engine placed on top of the car and the machine gun. The second one on the second row I like too, especially the shotgun coming out of the window, though it doesn't sound that functional to me. If demons come from the side, how is she going to move it towards them to shoot?

Anyway, even if I liked them, none of them gave me the vibe that my first sketch did, so I think it's the first time I actually insist to proceed with my first idea.

This is the finalised sketch: 

The weapon would be moveable in more directions and the spikes are made to keep demons at a distance or stab them if they come to close, The metal plates keep the car as safe as posible without obstructing the spikes and some of the luggage is stored on the small platform at the side of the car. There is a powder barrel in the back to reload the hunting rifle. Since demons are sensitive to light, we have two pairs of headlights, the bigger ones set quickly on the car. As for details, there's the angel statue on the front of the car and the photos stuck to th window. They are photos of the driver's daughter. 

That being said, I will probably proceed to model my car in 3D before experimenting with values and colour.