[RenSoprano]

Код:

PutPlayerInVehicle(playerid, carid);

should be

Код:

PutPlayerInVehicle(playerid, vehicleid, seatid);

Fix

Код:

PutPlayerInVehicle(playerid, carid, 0);

Код:

0 - Driver
1 - Front passenger
2 - Back-left passenger
3 - Back-right passenger
4+ - Passenger seats (coach etc.)