Say a well-funded team of thieves was able to obtain a Skycrane, store it in a well-hidden area, preferably a farm outside the suburbs, and equip it with a powerful magnet or riggings. They use this helicopter to make off with fancy cars and expensive construction equipment, at night, using said magnet or having a team of burglars on the ground secure riggings to the vehicle. They then fly back to the secluded farm and deposit the prize on the ground. It would then be hidden or put in a truck and driven away.
What are the odds of such a scheme working, if even for only a few days? Would it be possible for them to get away before the police deployed a chopper of their own to chase them? Could skilled criminals actually pull this off without being detected at all (perhaps operating only in desolate areas and stealing only construction machines from work sites?) And, what additional charges might be added, were they caught, due to the use of the skycrane?