Hybrid cars records

''Ford Fusion Hybrid Gets 81.5 MPG in Hypermiling Challenge'' [source] (circa 35 km/l !)
''Honda Insight Hybrid Wins Hypermiling Competition with 124 Miles per Gallon'' [source] (circa 52 km/l !!)

And batteries could be 10 times more powerful in the near future. Read here:
''... by replacing the conventional graphite electrodes in lithium-ion batteries with silicon nanotube electrodes (silicon nanotubes, not the more common carbon nanotubes), 10 times more charge could be stored.''