I’m a worrier. I worry when a loved one is supposed to arrive at an agreed time but haven’t. If no text messages or call to inform me where he or she is, and I can’t reach his/her mobile phone, I would start to worry.
So don’t you think it would be just cool to install a gps tracking on your family car (or your parents’ car)? You’d always know that they are on their way to your agreed place. No worries.