What kind of business? Your reference to "we" indicates that it was not a sole proprietorship or single member LLC. So was this a partnership? S-Corp? C-Corp? Something else?
Who was the titled owner of the car? The business? An owner of the business? Or a third party with no financial interest or ties to the business?
What was the cost or FMV of the vehicle the first year it was placed in service for the business? (whichever is the **LOWER** amount.)
What was the business use percentage of the vehicle?
How many years was this vehicle used for business?
If the business use percentage was different every year, then how many years and what was the average business use percentage of the vehicle over those years?
