Your fact pattern is like a law school test question because to have a viable claim it must be foreseeable that the landlord's conduct would cause an accident like yours. Given the severity of your injury I do believe it's in your best interest to contact an experienced attorney.
You may be entitled to a significant compensation if your injury persists. However it might take time to determine the full extent of the injury. Be mindful that there is very little time to pursue a claim against a city bus so contact an attorney as soon as you can who can preserve your rights while you recover and determine exactly what you are dealing with
You are likely entitled to compensation not only through the striking vehicle but additionally through the insurance coverage on your vehicle depending on the coverage limits of both vehicles and the extent of your injuries. Contact an AVVO lawyer as soon as you can .
In most cases if the defendant was properly served you will get an answer to the complaint even if it's a little late. In cases where there has been a long delay your attorney should make a motion in court for what's called a default judgment. Often just the making of the motion will result in defendants response to the lawsuit.