I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets....6 c" g/ F6 W- A5 c9 w# P% I& z
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For me, I think car-pool is just to share part of gas "cost" and have some fun on road..... ' S8 u/ z6 \) i7 m2 U1 [' Z8 J; m) w% M8 S0 q0 m
I usally charge passager 30 bucks for a trip.