LOL!
I'm not buying it either. I haven't been up to the Canadian border (I live in Washington) for 8 years or so, but, there used to be big signs along the freeway saying "Canadian border 20 miles" etc.
And who would put a grenade in the glovebox and forget about it!?! Wouldn't her husband say "if you are going to take the car today let me get something out of the glovebox"?
FOFL! Or at least "Honey, try to avoid the potholes today, okay?"
He'd only say that if it was something he truly wanted to hide. BTW my daughter loves your tagline!