I have spent my career doing this. Now, I fell good about chasing, mainly because I have learned a great deal about the storms, and how to use the knowledge constructively. I learned as a kid my baseball skills would not land me in the majors, so becoming a meteorologist was what I was supposed to do. The atmospheric pressures associated with tornadoes vary. A good number of tornadic supercell thunderstorms form near low pressure systems, especially to the northeast or east of the low.
Mobile homes are vulnerable to wind storms and tornadoes.
People in mobile homes should have a reinforced building or an underground shelter to go to when a tornado or severe windstorm threatens. Stay on the concrete or blacktop and you will not face that serious problem. I chase in a car and stay on the paved roads. Thus, I take highly detailed road atlases with me. Good question - Cars can be blown off the road at about 75 mph.