$7500 EV Tax Credit and Income limitation for Married Filling Jointly

Hi, let's say my wife and I bought a new Tesla Model Y sometime in the future and took delivery before the end of this year (2023).

Question 1) Is the income limitation for a couple filing jointly under $300,000 (AGI) based on this year's income (tax year 2023) or can we also use last year's income (tax year 2022) to qualify for the $7500 tax credit?

The IRS rule below stated one of the two years, so does tax year 2022 count? Is it based on AGI or modified AGI (MAGI)?

"You can use your modified AGI from the year you take delivery of the vehicle or the year before, whichever is less. If your modified AGI is below the threshold in 1 of the two years, you can claim the credit."

 

Question 2) What if we buy two EVs in the same year, or one this year and another EV next year? Can we claim the credit?

 

Question 3) If we buy one EV for personal use and buy one EV for our LLC/business use (either same year or different year). Can we claim the tax credit on both EVs?

 

Thank you very much!