[Kindred]

pawn Код:

CMD:test(playerid, params[])
{
    if(IsPlayerInVehicle(playerid, 522))
    {
        //Do something if they are in NRG
    }
    //If they are not in NRG
    return 1;
}

And if you want to make a few vehicles get checked, use something like this stock:

pawn Код:

stock IsCertainVehicle(playerid)
{
    if(IsPlayerInVehicle(playerid, 522) || IsPlayerInVehicle(playerid, 411))
    {
        return true;
    }
    else return false;
}

Then use the stock like this:

pawn Код:

CMD:test(playerid, params[])
{
    if(IsCertainVehicle(playerid))
    {
        //If they are in NRG or Infernus
    }
    //If they are NOT in NRG or Infernus
    return 1;
}

Hope I helped.