That's weird, I just clicked to that AP article again this morning and the content seems to have changed considerably since yesterday...unless I read a different article but linked to that one...???

One point which I remember reading (which doesn't appear in that linked article) is that some people were rushing to take refuge in parked vehicles. So, they were out in the open and there weren't any buildings around so they headed for a vehicle. I remember a couple different people mentioned in the article took refuge in junked cars, thinking it would shield them from the wind driven debris. They probably would've been better off staying in the open and trying to find a ditch or culvert or even just laying flat where they were.

Anyway, so being caught in a vehicle doesn't necessarily mean that they were driving around when they were hit by a tornado, so let's not get too focused on this idea of being able to outrun a tornado. Sometimes a parked vehicle is seen as shelter when in fact, it is more dangerous than being in a ditch, out in the open. Same warning about being in the open and running to the nearest mobile home, thinking that it provides shelter.