looks cool man- very mad max-esque.
i know your probably totally done with this project, but i have some late crits. (theres a month left so maybe its not too late?)
anywayz- the model is totally fine, except for the front area.
[img]http://neotokyo.radi-8.com/team/konstruct/repaint.jpg[/img][repaint](http://neotokyo.radi-8.com/team/konstruct/repaint.jpg)
you just need to raise that up a bit.
edit*
[i]DOH!- just realized that if you were to move up the hood, you would also have to move up the windows… so thats not really a small critique. 
[/i]
also I think I take the biggest issue with your graffiti- I see what your going for but it loses any hope of being totally bad ass the way you have your lettering.
theres a few things you could do-
1. s[u]earch the net for real graffiti [/u]
Avoid stuff that look like it took along time to create, your looking for street graff, not those nifty murals. -the problem is you loose all the anti zombie stuff.
2. [u]edit what you have.[/u]
theres something about a photoshop brush thats meant to look like spray paint that really looks terrible imo. id go thru with some more brush work (eraser) and soften things here and there. Often times spray paint fades at the end of a line. Also, when the can is turned, one side of the line will get flared outward, while the other side will remain sharp.
another thing that is really not working is your giant blobs of color around some of your lettering. Id get rid of those blobs all together and go for the graff 101 technique:

notice the steps:
1. actual letter forms- (while letters)
2. outline ( blue outline)
3. drop a shadow (usually the same color as the outline, in this case blue)
4. the gel (white outer outline.)
this trick generaly makes anything look dope.
finially my last crit.-
is to seriously play out an over the top zombie killin theme.
i`d take the spikes above the cattle gaurd and the whole front of the bus and just cover it in directional blood, like this thing was goin 70 through ape loads of zombies.
looks good- sorry bout the late crit. :sad:
p.s. could we see the driver closer?