When the first 5 Series was launched, way back in 1972, it heralded the introduction of a naming system for BMW model designations that are still in use today. The BMW 520 was the successor to the BMW 2000 Neue Klasse model. Since then, the range has sold some 7.6 million models worldwide. Launched in the UK earlier this year, the latest and seventh-generation 5 Series model is even more high-tech, efficient and accommodating. A staple of the executive car class, this popular model competes against the likes of the Mercedes-Benz E Class, Audi A6 and Volvo S90. Continuing QUBE/just-auto's review of interior design and technology trends, we take a closer look at the latest incarnation of the 5 Series.