> ‘Never, ever will I lend my car to strangers.’ Then there’ll be others who’ll love the idea of halving their leasing rate.”

For luxury cars it appears that it would tend toward "never ever". Having a luxury car isn't for practicality and you tend to feel very possessive about what you have and it possibly being damaged. Having it tarnished in some way lessens the joy of arbitrary non essential ownership. The idea that someone might have some heavy perfume or cologne or smoke in or near the car (however prohibited) would be enough to give many people pause. Also what if someone drove the car and by accident left some contraband in it?