Soldato
The window dropping an inch isn't the entry aid it's got something to do with the door seals for door opening. That isn't the feature the guy meant.
The window dropping half way is to make it easier to get into the car in tight spaces as the window can obstruct entry when it's fully closed. It is, as I said, a standard feature on BMWs without door pillars. Sometimes it's not enabled, but it's there and accessible if coded.
Ahh ok thanks, will see if mine does it.