I agree with Carl except for the need for mileage logs. here's what I found in IRS PUB 463 page 25
Cost of each separate expense. For car expenses, the cost of the car and any improvements, the date you started using it for business, the mileage for each business use, and the total miles for the year
from this webpage
https://www.driversnote.com/irs-mileage-guide/mileage-log-requirements
The IRS defines adequate records
Regardless of the circumstances of your employment, you will likely be asked to record the following:
"the mileage for each business use"
"the total mileage for the year"
the time (date will do), place (your destination), and purpose.
