I class my GHB and car kit as the same thing, as the other car related stuff is for an accident or breakdown.
I have two items I would like to add that have served me well.
A poncho liner and poncho. I have found these two items so useful over the years I cannot recommned them enough. They will serve you well in many non SHTF activities - Camping, Patrolling, Festivals, Sepectating, Car breakdown etc. They would also be handy items if you need to walk home or SHTF.
http://kifaru.net/woobieXpress.html You can get other cheaper versions.
http://www.military1st.co.uk/10630021-ge...-camo.html