The document describes a 2-stage plug-in hybrid electric vehicle add-on technology that can be installed in cars' trunks. It claims to improve fuel efficiency to over 100 MPG and allow 40 miles of electric-only range. The system uses two sets of lithium-ion batteries that charge in 4 hours from a standard outlet. Kits starting at $1,995 are said to pay for themselves within a year through gasoline savings and reduce emissions. The manufacturer aims to provide a reliable, affordable, and widely available solution.

1. 2-Stage Plug-in Hybrid Electric Vehicle Add-On Technology Breakthrough ( Patent Pending )

2. Save Save the Earth, Save Your Money 2-Stage PHEV Add-On Kits

3. Installed in the trunk, spare tire reserved  Plug-in Hybrid Electric Vehicle PHEV Simple Add-on System

4. Inner Structure Lithium-ion Batteries 4000KWh DC/DC Converter （ Current & voltage control ） B attery Management System Fire Extinguisher Charger

5. 1.7L / 100KM Accumulated mileage ： 165KM Test Drive Welcomed Test Result 

6. Save the Earth, Save Your Money ★ 100 MPG ★ 40 blended Hybrid miles per charge 2-Stage PHEV Add-On Kits

7. More Usable Capacity with Two Sets of Batteries Existing GM Volt: 16KWH Pack @ 30-80% = 8KWH for 40 Miles Two Sets: 3KWH @ 40-80% + 13KWH 20-100% = 12KWH for 60 Miles 120VAC DC/DC 40-80% 20-100% Transit Cruise NiMH 20CA Lithium 3CA Drive

10. Save the Earth, Save Your Money Components 2-Stage PHEV Conversion Kits Battery Management System Power Converter DC-DC Lithium-Ion Battery Charger

13. 2-Stage Plug-in Hybrid Electric Vehicle Conversion Save the Earth, Save Your Money

15. Save the Earth, Save Your Money Reliable 2-Stage PHEV Conversion Kits

17. Affordable 2KWH Kit at $1 ,9 95 4KWH Kit at $3 , 495 8KWH Kit at $5 , 495 Save the Earth, Save Your Money 2-Stage PHEV Add-On Kits

19. Enginer Dealers Network