On a 6-hour drive to Yellowstone with two kids and zero cell service, I learned that SpaceX's mobile satellite internet is the ultimate parenting hack. It even let me get some work done. Normally, an all-day road trip from St. Anthony, Idaho, to Old Faithful in Yellowstone National Park—and back!—would be ranked near the bottom of my list of fun ways to spend a weekend with two little kids. Oh, it's a beautiful drive, to be sure, wit... [13580 chars]