Watching your wife's commute also makes me uneasy. Maybe she wants to get you a surprise birthday present or something. Anyway, I wouldn't want to track someone like that (including children) or be tracked like that.
I mean Apple even added a native feature to iMessage with full on tracking, exactly because of safety. Sure someone needs to send it manually but the whole point of Check-in (tracking someones progress home) is safety. Just too many shady blokes out on the street at night.
