Hopefully the Captiva, being a late model car, was fitted with a GPS. If so then maybe QPS can extract some valuable info...
It would appear that all trips are stored, for up to 16 days on some GPS units, not only entered destinations!
www.forensicwiki.org/wiki/Global_Positioning_System
Take note of the Garmin description, particularly the last para and also the Cell Phone with GPS para.
Doesn't really assist us now but could turn out to be the "smoking gun".
I could stand to be corrected but this is my understanding.