One other thing to add: when using work as an excuse for an expensive, luxury car, you need to set rules and restrictions on what other uses the car is used for.
I use my car for both business and personal. I have NEVER allowed food of any type to be eaten in this car. I don't allow coffee. I do allow liquids in bottles that seal, but not often. My family members have actual fits about not being able to snack in the car. Friends think I'm insane. Well, my car is 8 years old and looks almost new.
Btw, when did it happen that human beings cannot last two hours without stopping at a gas station for a snack? If you wants to see a bunch of crybabies, try putting a few adults in a car for an hour with no food.
In short, if you cannot institute a rule like this, then you're not really using the car for work. Your just using work as an excuse for a fancy car