This thread on GasSavers.org has a couple of new ones on me:
Super high MPG cars we may never see - GasSavers.org - Helping You Save at the Pump Hypermiling and Fuel Efficiency Forum
Like the
Toyota ES3:
Toyota ES3 concept
Fuel Economy: 87 mpg
Top Speed: ---
0-62 mph: 10
Horsepower: 67
Drag Coefficient: 0.23
Curb Weight: 1543 lbs
Seating Capacity: 4 adults
Classification: Compact
And the Jetcar 2.5
Fuel Economy: 90 mpg
Top Speed: 100 mph
0-60 mph: ---
Horsepower: 40
Drag Coefficient: ---
Curb Weight: 1,455 lbs
Seating Capacity: 2 adults
Classification: Sub-Compact
Powertrain: 600cc L3 gasoline engine