I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets....: g' l! ?4 M4 @, v/ l
. J( f6 Y/ K4 o" Q2 X4 _For me, I think car-pool is just to share part of gas "cost" and have some fun on road...... t1 Y+ V- C# R% k
9 Z7 c9 h2 p5 V! c; k' VI usally charge passager 30 bucks for a trip.