Memorex Travelview 43055 Mobile VCR with 9" TV
Don't travel with kids without it!
I just made a 3,000 mile round trip with 4 and 6 year old kids.  The TV/VCR not only provided excellent viewing and sound quality it also worked great with the PlaystationII.  The only issue was that we could not rewind a video and start a game without blowing the fuse for the power supply in the van.  Rewind first and there are no problems.  We used the unit from early morning until after dark for 2 days in a row at a time during our adventure and I would never travel again without it.