I see I'm not remotely original in my naming.

Garmin has a "Dude, where's my car" function.

There's an iPhone app called "Where's my car?"

Here's a little "Homing Device" that does what I wish MM did. (OK, less than I want MM to do, but at least it points the direction and says how far; it just doesn't have any maps at all.)

BTW, what I'm actually thinking about is finding my way back to hotels in strange cities or being lost and looking for my car in large city or national parks -- unaided, I've had problems with both of these. I have a terrible sense of direction, and this is what I (ignorantly) figured all GPS devices did and what I figured MM would do.