'...the decision is already made...'
the options on the table don't sound very nice so the decision may not be nice too....
if it is a personal car,then i beg you opt out... like @ mukiha said,you will be financing a liability... otherwise,for a commercial car,then you can finance it 1/2 by savings and 1/2 by sacco loan since it is cheaper than bank loan...
if you are sure with other better investments,(whose rate of return is higher than the financing rate for the loan) then you can go for option 2...
When you run so fast to get somewhere,you miss the fun of getting there... Life is not a race,so take it slowly....
When you hear what I say, you will not understand. When you see what I do, you will not comprehend