For some time now, vehicles sold across the world have had the ability to self diagnose their problems. This capacity is referred to in the industry as on-board diagnostics, or OBD. On-board computers ...

OK, so imagine, you're four-wheelin' with a bunch of friends in Baja, or maybe you're halfway into some backroad in Canada. After a beautiful camp, 50 miles from the nearest light bulb, you pack up ...