I think it severely undermines the value of cars, the collectable portion of the game and the community which revolves around legitimate trading of cars.
However - used to trade cars over the limit imposed by PD? I'm really not opposed to it - while I don't personally participate in the 'borrow glitch' as a way to get around rather nonsensical limitations it's okay with me 👍
I don't care about it really. Some people did borrow glitch my x2010. No probs.
But i think "Lending" it like that takes the fun of the game away a bit.