Are these bar style steering locks any good?
 

I'm in and out of the car a fair bit during the day and need something that's quick to fit and will help stop the opportunist thief - i.e. kids

my car is always in a locked garage at night so this is really just another visual deterrent when it's parked in a rough area of London for a few hours in the day

I always leave the glovebox and armrest open and empty as well

are these any good - £14 seems cheap - I guess if they want the car they'll have to get in and saw through the steering wheel to remove that section with the lock attached??

http://www.ebay.co.uk/itm/UNIVERSAL-...17728934548417

http://img.photobucket.com/albums/v6...MW1/81257C.jpg

I've heard you can break them with a long bar in seconds?

sounds about right - i went for a stoplock in the end