I worked one season for Severe Storm Laboratories just east of El Reno, in Piedmont, OK. One close call with a tornado was enough for me. First the missiles are flying; rocks, wood, garbage....then the wind stopped suddenly. Huh? And then it starts raining doors, rocks, fencing, dirt...once is enough.
Oftentimes scientific research isn't for the faint of heart.
Those bigger chunks flying around in the debris ball of a big one are often cars.