as we all learnt from first hand experience in last nights KK run. Never ever insert another key (with a transponder signature) or another object for that fact in the key chamber of your altezza. You can expect with certainty that afterwards, the proper key will not turn within the chamber - hence your car will need to be towed.
and if you do decide to do this, don't do it in near freezing temperatures so you all are not standing in the open air for nearly 3 hours :D