Tesla's Navigate on Autopilot was my CES road trip companion

I love a good road trip. I've spent hundreds of thousands of miles in cars during my life, and the best times were when I knew it would be hours or even days before I reached my destination. Typically a friend (or friends) or family members would accompany me, but on a few occasions, it was just me, my music collection -- and scenery screaming past me at 70 miles per hour. In the past few years, more and more automakers have created semiautonomous systems so that you're no longer "alone" on these drives. One of the more robust (and most famous) is Tesla's Autopilot.