I don't know the exact "cost", which may be too complicated to calculate it, including car,maintenance,gas,insurrance, even tickets.... 4 K* U1 @2 Y$ I) D! |5 }! J5 O! r( `( a/ L1 \) u; s
For me, I think car-pool is just to share part of gas "cost" and have some fun on road..... ) U6 r* g0 ]1 D/ s5 s! B+ A# k) }: S& ^
I usally charge passager 30 bucks for a trip.