I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets....) l, a" E* G0 j' s: d# I
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For me, I think car-pool is just to share part of gas "cost" and have some fun on road.....1 S/ D! m4 \5 f
. S% U a A1 a5 t% A4 V& fI usally charge passager 30 bucks for a trip.