Variety is the spice of life and also of PPP financing. Many funding mechanisms bridging public and private are already in place and new ones are cropping up with dizzying frequency. Initial funding of an infrastructure PPP is usually provided by private sector investment when the lead entity either places its own money or the bank's money on the line to plan and develop the project. In some instances (pending appropriate enabling legislation), the public sector is also involved in financing the front end.