Tassie, I'd opt for the .60 per mile ... you'll be driving in a car that's comfortable and safe. As mentioned highway miles are easy on the engine which should be good for hundreds of thousands of miles with regular oil changes and maintenance. If your 300E is pristine and you're worried about it sitting out all the time look for another 124 car to use specifically for business. The numbers cover that situation too. No way would I want to drive a Ford minivan any distance.

__________________
Fred Hoelzle