When our first child, a daughter, was born almost eight years ago, I, like many new moms, turned into a complete, paranoid freak. I could barely take a shower while she napped (yep, one leg in and one leg out, rushing a fast as possible, with the monitor up full volume to hear every breath) for fear she would do, I don't know, something dangerous.
One of the situations I was most nervous about those early months with her was taking her in the car, as her seat faced away from me and I couldn't see her AT ALL TIMES. My husband spent hours upon accumulated hours adjusting and then readjusting this little Elmo rear view mirror just above her car seat so that she was fully viewable.
(Note of warning to new parents: Babies get used to the spot light. My daughter is a diva.)
I laughed out loud last night as I was leafing through a baby catalog and happened upon a backseat electronic camera/monitor for the car (with night vision)! You plug this thing into the lighter and set up a little screen on the dash board - with a roving camera eye in the back seat - and, hallelujah, your baby will be under constant observation for the entire five minutes it takes to drive to the grocery store!
Our eight month old has, I venture to say, a much more effective monitoring system when we travel with him by car. It is called, "Hey guys, what's the baby doing?"