Taxi help

[Wei]

How can I make that when player will join the car as passenger it will take him money and give it to the driver for every mile or km.

CODE:

setTeamFriendlyFire(teamtaxi, false) 
  
teamtaxi = createTeam ( "Taxi Drivers", 255, 255, 0 ) 
  
function taxiCommand ( thePlayer, command ) 
  destroyElement ( taxiOphaalBlip ) 
  taxiOphaalBlip = createBlipAttachedTo ( thePlayer, 48, 1, 255, 0, 0, 0, 0, 99999.0, getRootElement() ) 
  outputChatBox ("Car on the road, stay put!", thePlayer, 255, 190, 0, false ) 
  outputChatBox ("Someone called taxi!", getRootElement(), 255, 190, 0, false ) 
end 
addCommandHandler ( "calltaxi", taxiCommand ) 
  
function taxiCancelCommand ( thePlayer, command ) 
  outputChatBox ("Remember to turn off.", thePlayer, 255, 190, 0, false ) 
  outputChatBox ("as taxi job done!", getRootElement(), 255, 190, 0, false ) 
  destroyElement ( taxiOphaalBlip ) 
end 
addCommandHandler ( "taxicancel", taxiCancelCommand ) 
  
taxiVehicles = { [420]=true } 
taxiSkins = { [7]=true } 
  
function taxienterVehicle ( player, seat, jacked ) 
    if ( taxiVehicles[getElementModel ( source )] ) and ( not taxiSkins[getElementModel ( player )] ) and ( seat == 0 ) then 
        removePedFromVehicle ( player ) 
        outputChatBox ( "You are not a taxi driver, you can not drive this vehicle.", player ) 
    end 
end 
addEventHandler ( "onVehicleEnter", getRootElement(), taxienterVehicle ) 

[Castillo]

getPlayerMoney 
takePlayerMoney 
givePlayerMoney 
setTimer 

[Wei]

How can I get the sit wich is player sitting on. I mean Driver or....

[Alpha]

getPedOccupiedVehicleSeat