[=WoR=Varth]

pawn Код:

new bool:IsVehicleVeh[MAX_VEHICLES];

//Under your OnDialofResponse. Show us your code if you have no idea where to put this
IsVehicleVeh[vehicleidhere]++;

//Command to delete vehicle
for(new i=1;i<=MAX_VEHICLES;i++)
{
    if(IsVehicleVeh[i]) DestroyVehicle(i);
}