Where to add my business car details in Turbotax: "Vehicles used by all partners, jointly" or "Vehicles used only by me"?

I use my car to run my two businesses and also some personal use which I share with my wife. In TurboTax there are 2 sections to add vehicle expenses. Which one should I use given the above scenario: "Vehicles used by all partners, jointly" or "Vehicles used only by me"?
P.S. My wife is not part of the businesses.