is it possible to build a system for protecting bus passengers?
what i have in mind is an egg like encasing made from some plastic material, it can be for 1 2 or 3 persons and modular (in the unlikely event of peace)

since i have no knowledge of such things i'd like to hear from you what you think: is it feasible and how effective can it be

it is probably cheaper to buy a new bus, and 10km of shrouds.

well i knew i wasn't the only smart guy around..
it reminds me of the siege in moscow when i thought "why don't they knock them out with gas...