"The vans became so well known, that not only the authorities but also the civilian population called the van 'death van', as soon as one of these vehicles appeared. It is my opinion the van cannot be kept secret for any length of time, not even camouflaged." . . .

"The application of gas usually is not undertaken correctly. In order to come to an end as fast as possible, the driver presses the accelerator to the fullest extent. By doing that the persons to be executed suffer death from suffocation and not death by dozing off as was planned. My directions now have proved that by correct adjustment of the levers death comes faster and the prisoners fall asleep peacefully. Distorted faces and excretions, such as could be seen before, are no longer noticed."

–Report by Dr. Becker,
SS Untersturmfuehrer