[Weirdosport]

Alternatively, dump it in a stock.

pawn Код:

stock IsListedCar(vehicleid)
{
  for(new i,j=sizeof(CopCars); i<j; i++)
  {
    if(CopCars[i][Vecid] == vehicleid) return 1;
  }
  return 0;
}

Example:

if(IsListedCar(CarID)) //player is in a listed car
if(!IsListedCar(CarID)) //Player isn't in a listed car

NOTE: You need to save the vehicle ID, as yezizhu showed.