The way I interpret it is like this (I am not Hindu so my view is limited):
So, you were driving through a forest at night; this sounds to me a reflection of how you drive in your life. You are walking your life but somehow it is dark. This can mean confusion in your life or it could mean hidden truths or information which is about to come into your life - like, mystery of this kind. It can also mean a bit of both.
I do not know Lord Hanuman too well, but for what I perceive, this is a spiritual figure. It represents spirituality in some way. About him growing up into the sky, it can mean growth and ascension. So, spiritual growth and ascension for you.
This can be a message for you but I do not know because I am not you
Do you think this was accurate? This is how I interpret it but it does not mean it has to be right; you know yourself and your life more so you know
Anyways, I hope this gives you a positive message for your life