Here's feedback - you've sorta mixed different art styles. The road drawing style doesn't match the trees and fire. Mixing styles could work, but here, it just feels like you scrapbooked stuff. The car scene isn't as complete as the building one (maybe a more detailed road?).
Another hint : houses that are further away from the camera should be drawn with a thinner line, otherwise you'll get roofs that are almost completely gray.
It would help if the edges of the houses were parallel with the roads (unless you're trying to be abstract). You can get away with breaking the rules of perspective, but it should be deliberate.
Your use of music and editing works well. You understand the essence of a trailer. The buildings' art style is kinda interesting. Look over some abstract art, and see what you'd like to embody.
I say, if you like drawing and animating, keep it up.