A solo road trip with young kids can be a scary proposition.  Not a lot of upside – if they’re good and quiet, it’s still not enjoyable because you ride with the anxiety that the mood will turn any moment.  Now the downside, however, is pretty significant.  There is not much worse that being stuck in a car with a screaming baby or toddler, by yourself, when they are flipping out and there is nothing (short of pulling over) that you can do to stop it.  You’ll try anything – sing, make funny noises, turn on the music, turn it up, turn it up even louder – anything to make…