I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets...., l( d* ?7 ]& b8 b5 V( a
0 k& ?3 u2 o3 Q) y `: c8 d! iFor me, I think car-pool is just to share part of gas "cost" and have some fun on road.....: z3 i9 D$ K/ }% t$ Y0 R
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I usally charge passager 30 bucks for a trip.