Within the 15 years that make up this era, the various experimental designs and alternate power systems would be marginalised. Although the modern touring car had been invented earlier, it was not until Panhard et Levassor's Système Panhard was widely licensed and adopted that recognisable and standardised automobiles were created. This system specified front-engined, rear-wheel drive internal combustion engined cars with a sliding gear transmission. Traditional coach-style vehicles were rapidly abandoned, and buckboard runabouts lost favour with the introduction of tonneaus and other less-expensive touring bodies.