Periodically, I will try to post some tips I have figured out. They may not work for everyone, but it works for me.
Babies often fall asleep in the car. If it is soon to be nap time, and I am headed somewhere, I go ahead and leave early. I let them sleep in the car so they get more of a nap. I check out books on CD. So, if I am driving to get them to fall asleep, or I am at my destination but don't want to disturb them, I enjoy a good book. I am currently listening to "Other People's Children". I am often sitting in my drive way, returned from some outing, listening to a story while the Wonder Twins sleep.