Can my car be towed/ticketed if I'm parked taking a break (or napping to avoid exhaustion)? I'm planning a trip through Ontario and figure it's best if I take a nap every 5-8 hours, but I'm wondering what the legality of temporary parking is.  If it's 10PM and I decide to sleep in my car overnight, could I be ticketed/towed?  If I'm parked in a grocery store parking lot at midnight and a tow truck tries to take me away, can I just remain in my car?  What places are legal to park for a few hours (or possibly overnight)?