The question isn't "is anyone fooled by this anyway?", it's "why is Tesla using deceptive practices?". IMO, they should feel free to point out cost savings somewhere, but they should not fudge guestimated values into the first price they show you. It's not just tacky, it's bullshit. Energy cost and tax savings vary by region and based on your individual situation, your driving habits, etc. Tax refunds do not affect the cost you have to pay for a car upfront. Elon Musk is an engineer at heart, and I feel like he should know better. Doing things like this loses them the respect of a lot of people.