Anand Mahindra Has a 1942 Willy Jeep. The 1942 Willys Jeep is a small, four-wheel-drive vehicle that was used by the United States Army during World War II. It was a universally designed vehicle that could be used for transportation, freight, support of medical units and many other purposes. The Willys Jeep was originally developed by two companies, Willys-Overland and Ford Motor Company. Both companies used the same design, but Willys-Overland built more vehicles. The Willys Jeep was powered by a 60-horsepower, 4.0-liter, four-cylinder engine. It could reach a top speed of 50 mph (80 km/h) and travel a range of 300 miles (480 km).