Will you be picking the car direct from the airport ?
If so - you might need to get your friend to help you
find ACOR (which sits on a hill overlooking the University)
and isn't probably that easy to find for you. Apart from
main roads where the names of the streets are used -
not many people use street names. They kinda use land
marks ie next to MacDonalds, opposite the post office etc.
I don't know about the google thingy but if you ask anyone
in Amman for Route 15 they won't know what the hell you're
on about . . ha haa !
Post Boxes are no indication of where a house is. These PO
boxes are all in the Post Office.
I guess your first day actually depends upon what time you arrive.
If its 3am - then there's no point - everything will be closed.
Jerash is only about 35 minutes from ACOR - as is Madaba.
As you have a car - then you can see many of these places.
Most of them are very quiet - if you want to feel like the guy
in Legend (the last man on the Planet) go to the Panorama
overlooking the Dead Sea - its very l o n e l y !!! Lovely, peaceful
view of the Dead Sea and Palestine and the sun set. If you pass
another car on the road you are lucky.
Jordan is very small by comparison - see as much as you can.
Driving will be a doddle for you - compared to LA - its a piece of cake
at the busiest of times.
You could ask your friend to mark ACOR for you on Google Earth.