I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets.... - [0 [/ W+ u& r4 {4 Z4 [9 R @9 i G$ K, M
For me, I think car-pool is just to share part of gas "cost" and have some fun on road..... " _& C( U' F; p7 I9 V& D! B! z4 H5 R
I usally charge passager 30 bucks for a trip.