I have these for my motorcycles and I suppose you could use two of them for the lC steering wheel.
With 5x more angle-grinder resistance than the best performing D-lock, X1 is the ultimate in bike security: lightweight Sold Secure Diamond armoured D Lock.
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They're made from a special material that would take many different blades on professional angle grinders to get through.
Fun videos to watch of Independent companies trying to break/cut them...
I have dark tinted windows as well which help.
But I find the best security to be physical security. So someone has to sit there. Make a ton of noise with angle grinders for a very long time to go anywhere.
Thieves will very quickly move on to the next car.