[Signalman]

The Volt's all-electric range is about 40 miles, though up to 400 miles using its gasoline engine.

So it's just another hybrid.

[Blood of Tyrants]

Worse, it is a hybrid whose development cost the taxpayers over $1 billion and yet still costs $41,000, the cost of a low end luxury car.

[Getready]

Supposedly the 40 miles is electric only...if you need more
range the gasoline engine kicks in and recharged the battery
as you drive. Some people claim about 100 miles/gallon(
using a mishmash formula factoring in kw used,and gallons etc)
with both systems running...
I have also heard that the gas engine does give a little
boost to the drive train (so in that case it is a
Prius like hybrid)...but I’m not sure about that.
P.S. I believe it was in about 1978 that Briggs and
Stratton had designed a hybrid car...I remember
seeing an article in an old Popular Science or
Popular Mechanics magazine...