I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets....% d: f+ _3 Y: S% u+ u( H
9 B5 J4 U' Q" w$ A1 b( y4 I- DFor me, I think car-pool is just to share part of gas "cost" and have some fun on road..... 1 d: i; T* X I# w: X! X" ~+ I7 w4 k& r
I usally charge passager 30 bucks for a trip.