Leasing with NEGATIV interest rates

Hello Motor-Talker, have you already seen the leasing offers from Smart? Now new: reading with negative interest rates! (In the advertisement in the “star”, which I saw yesterday, MINUS 6.99 % were shown). My question: isn’t this an eyewipe? The dealer told me that Smart wants to “push” the leasing. I think that’s very suspicious. But why don’t they want to push the financing? Isn’t it really just about the sales figures for new cars? And I also find verd I can play around with KM numbers and leasing runtime in the leasing machine on the smart website until I get even MINUS 24% (!!!) “leasing factor” (whatever that is supposed to mean). You think you have to strike immediately! Unfortunately, the dealer can’t tell me which confectioners I can take over the smart at the end of the runtime. I don’t want to fall into the scratch trap, where every little stone blow at the end of the runtime is expensively paid. How do I get the bank to tell me BEFORE what conditions I can take over the Smart after 24/36/48 months? What is a “leasing factor”. Is minus 24% “leasing factor” as great as it sounds or is it like a Chinese ghetto blaster: 500 watts, but zero sound!