This video is likely miss-titled. But the main point is an important one. Entire truck loads of food have had to be thrown away because the trucks where found to also contain stowaway illegals who had to have been living in that truck for longer periods of time than biology would allow without having to evacuate.
They probably broke into these cars when they were stationary but the main point remains. We need better border controls and more draconian measures to discourage these behaviours. There is not only no deference now for ignoring national laws down to minor regulations, but there is incentives to do so if you are in a protected group.