I would also like to add that for smash-and-take cases, it doesn't matter where you park (busy street, shophouse, etc), when you park (daytime, nighttime), as long as there's something interesting in the car, they would take it, and nobody would stop them. Try to avoid parallel parking too, becos it's so easy for thieves to ride past on a bike and glance inside cars.

That's just 1 BMW?

Next to useless. Open bonnet, alarm sounds, disconnect battery. That's like, 2 seconds?

But maybe gives u more peace of mind.