Rumor has it that the Estoque is equipped with the Audi RS6 / Lamborghini Gallardo derived V10 engine but bear in mind that this isn’t official information. However, there’s no need to worry as it’s only a matter of hours before Lamborghini officially unleashes the Estoque. In the meantime, check out the image gallery below and tell us what you think about Lambo's Porsche Panamera rival.