Audi A7 Plug-In H-tron

[miimura]

Is this car an EREV, like the BMW i3 ? It appears to be an electric car, that has an onboard liquid-fuel generator to charge up the motors' battery once it's nearly flat.

Yes, likely to the same extent that their PHEV cars are EREV - 50 miles on the NEDC test which comes to about 20 miles on the EPA test for AER. The notable thing is that this FCEV has a charging port at all. To my knowledge, Toyota and Honda have never shown a FCEV that can take energy from anything but H2.