Yes you are right ,even Airbus A320 can blast and blow a big Van meters away,takeoff always depens on available thrust and aircraft weight, runway elevation,temp etc etc and many other things and ''98%'' of the takeoff's doesnt involve ''Full thrust ..it has many other implications then ...So here at st martens Pilots know its a road behind and have reasonable safe distance, they give calculated takeoff thrust after moving some meters ahead ..If they give full thrust and dont move then it will blow everything behind it till death. ...
//youtu.be/http://www.youtube.com/watch?v=Q6AKVMtj5Kc
A320 blast injured a girl
//youtu.be/http://www.youtube.com/watch?v=stnYuLwXAyM