The plane can be equipped with live TV signal, wireless internet, and a daylight simulation feature to combat jet lag. The company also just launched the new “Nuage” seat designed for private planes. It dynamically adjusts to one’s body by shifting the weight to a more natural position; there’s also a floating base for easier rotation, and a central swivel to allow passengers to change the seat’s position. Bombardier
Though the early Lockheed Jetstar had four, most production business jets have two jet engines, mostly rear-mounted podded engine. If mounted below their low wing, it wouldn't allow sufficient engine clearance without a too long landing gear. The HondaJet is the exception with its over the wing engine pods. Dassault Falcon still builds three-engine models derived from the Falcon 50, and the very light jet market has seen several single-engine design concepts and the introduction of the Cirrus Vision SF50 in 2016.