I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets...." U( A6 \" p# y% b. P) m
! Z7 c, J6 S: b4 XFor me, I think car-pool is just to share part of gas "cost" and have some fun on road..... ) c) B A) m F; I$ @ [8 X" k3 N
I usally charge passager 30 bucks for a trip.