Separate names with a comma.
Edit: reverted Miles/yr back to 15,000 and made another small fix - now MS is $1200 less than MB E350 '14 (yay!). Still $25K more than the Ody though.
I'm sorry to burst everyone's bubble, but there are two glaring problems with this spreadsheet.
TL; DR: MS actually costs ~$25K more than the Ody...