Elsewhere in Europe the motorized bicycle continued to be popular, particularly in France and Italy. An Italian manufacturer, Vincenti Piatti, designed a 50 cc engine for driving portable lathes and this was also used to power a bicycle frame in the form of the "Mini Motore". Piatti later licensed the design to Trojan for production in Britain as the "Trojan Minimotor". In West Germany, a compression-ignition (diesel) engine kit using an 18 cc variable head engine made by Lohmann was produced during the 1950s. In France, where postwar reconstruction, taxes, and fuel shortages limited automobile access, motorized bicycle kits and complete models were produced by a variety of smaller manufacturers, often using a two-stroke gasoline engine mounted above the front wheel. In 1946, production of the very successful French "VELOSOLEX" commenced, continuing until 1988. The VéloSoleX was a mass-produced motorized bicycle that used a tire roller (friction drive) to the front wheel. After French production ceased, the "VELOSOLEX" continued to be produced in China and Hungary. An in-wheel gasoline engine was used on the Honda P50 moped, which ceased production in 1968. The "velomoteur" and motor scooter enjoyed a second renaissance in the 1960s and 1970s as a new generation of youth discovered they could ride a motorized vehicle without need of a driver's license. Other countries had relaxed licensing requirements, e.g. lower age limits for motorized bicycles, which increased their popularity.