I concur! Took a job a few years back with the same scenario (Even less mileage reimbursement) and covered an entire metro area. End result was that I burned-up my vehicle and put on approximately 70k miles in two years which did manage to drastically shorten the life of "my" vehicle. (Not the company's)I know this isn't what you're asking but man that's a lot to ask of a person to have them beat the heck out of their own vehicle for the company and just getting paid mileage.
I also purchased tires, brakes and oil changes... Did not skimp on maintenance either! Yeah... guess which party made out the best in that deal....