Re: Mobile phone jammer doesn't make sense
What does make sense is vehicular remote control jammers. They are a real thing and are apparently used by vehicle thieves - if the remote is jammed, the driver may believe they've locked the vehicle when they've actually left it open. A lorry park seems a very likely place for a remote control jammer to be used, and of course it's the same frequency band. What I don't know is the range of such jammers.
(I sometimes park in a supermarket car park that is right next to an automatic car wash. Apparently some car washes operate remote control jammers to avoid nasty surprises inside the car wash. There is a region of the said car park where I have to manually lock and unlock the car - the remote simply doesn't work, and if I had an RC drone I bet it wouldn't work either.)