I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets....( ~; J3 q; c! m9 v& Q8 w2 q% f' o9 n
' k7 \1 J7 v& I+ e- rFor me, I think car-pool is just to share part of gas "cost" and have some fun on road..... 9 [% Z6 p* V/ u- M ) [! [) i/ a( ?' m7 U1 KI usally charge passager 30 bucks for a trip.