Earlier quoted context omitted.
In America, generally speaking, if you're using a privately owned car for business, the companies pay a mileage rate, which is currently 57.5 cents per mile. That cost is expected to cover the cost of gas and maintenance on the vehicle. I don't know if Uber / Amazon actually DO this, but if so, that mileage fee would be on top of whatever their actual pay rate is.
can't you remove this cost from taxes?
Subject to certain conditions and limitations.