Who created the jeepneys?

Jeepneys are made from jeeps left over by the US after World War 2. The surplus jeeps were fixed up, colorfully decorated, and used as public transportation in the Philippines. I have had the pleasure of riding in one back in the 1970's. The Jeepney fits about 6-8 people in the back. A fun ride. They have been modifies since, and the government has put restriction on use.