2008: inventor U. Poulsen proposed a #DIY kit to conv. std #ICE cars → #PlugInHybrid. Kit: bolt-on elec. wheel motors + ctrls + trunk batt. (wall-charged). Claimed result: #FuelUse ↓ to ~2–2.5 L/100 km on #Highway — no car rebuild. #HybridTech
Src: Pop. Mechanics (RU) №9/2008