<?php
 
class Veiculos {
    protected $tipo = "carro";
}
 
class Veiculo extends Veiculos {
    public function tipo_veiculo() {
        if ($this->tipo == "carro") echo "Você selecionou carro. Escolha a cor.";
        elseif ($this->tipo == "moto") echo "Você selecionou moto. Escolha a cor.";
        else echo "Você não selecionou nenhum carro.";
    }
}
$carro = new Veiculo();
echo $carro->tipo_veiculo();
 
//https://pt.stackoverflow.com/q/106737/101

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