We had a really quick trip home (compared to jenjenqld who left 3 minutes after us and got home over an hour after us). 4 hours of travelling with a 1/2 hour stop at a local, middle of the hills resturant.
As you can see from this photo, everyone had stopped being green. This was on the way toll coming from Bogor - a good hour after the hills.
Note - I always sit in the front because I get very car sick otherwise.