enuff_zed said:
As you say, something similar for the boot would be a bonus.
Well, have a look at the following two stories:
1) Emergency release in the trunk
https://translate.google.com/translate?hl=de&sl=de&tl=en&u=http%3A%2F%2Fwww.zroadster.com%2Fforum%2Findex.php%3Fthreads%2Fz4-3-0i-schalter-zur-kofferraum%25C3%25B6ffnung-fehlt.120577%2Fpage-2%23post-2745373
2) Release to get the flap to the trunc opened from inside of the car
https://translate.google.com/translate?hl=de&sl=de&tl=en&u=http%3A%2F%2Fwww.zroadster.com%2Fforum%2Findex.php%3Fthreads%2Fz4-3-0i-schalter-zur-kofferraum%25C3%25B6ffnung-fehlt.120577%2Fpage-3%23post-2752767
Well, Google Translate doesn't deliver the best translation, but it's worth to read.