Did you ever hear about the trick where people could open a Mercedes
with a ping-pong or tennis ball? It is an urban legend from years
ago. The complete Mercedes lock could not be manipulated with hooks
etc because it was completely shielded. In fact so sheilded it was
almost air thight. If you would smash a pingpong ball or prepared
tennis ball to the lock the air that is blown into the lock can only
escape by lifting the buttons up and unlocking the car. This is an old trick
and does not work anymore. One of my informants thinks it might still
be possible with a portable air pressure device. Currently small
compressors are one the market that can deliver 8 bar of pressure.
Maybe these locks where ‘blown open’? Sounds feasible to me..
http://www.toool.nl/blackbag/?p=38