Again, do your homework, 394 miles is not limited. Most vehicles can not get that using a conventional engine.
You're being intentionally daft. Let's go over some numbers to clear this up.
The Chevy Volt, according to the EPA, has an official range of 35 miles on batteries, and then 344 miles on gas (premium). These are the official numbers, and actual range varies. Chevy reports 25-50 miles on all electric.
Running on strictly gas, reported efficiency is 37 MPG combined.
By comparison, a Prius gets 50 MPG combined.
A Volt has about a 9.3 gallon tank. 9.3 gallons of premium at about $4.00 average gives us $37.2 for a tank.
A Prius has about a 12 gallon capacity, and runs best on regular fuel. $3.73 average gives us $44.76 for a tank.
According to the EPA, a Prius will cost $1.84 on average to drive 25 miles. A Volt will cost $.99 for all electric, and $2.65 for fuel.
Total yearly fuel cost for the Prius is $1104. For the Volt? Over $2100 in combined fuel/electricity.
What about environmental impact? The Prius consumes on average, 6.9 barrels of oil per year, while the Volt consumes 9.7 barrels per year.
The Prius emits 3.9 tons of CO2 annually, the Volt emits 5.1 tons.
The Prius also has 4 additional cubic feet of passenger volume, and 4 additional cubic feet of cargo volume compared to the Volt.
Price tags? Prius goes for around $23,000. The Volt starts around $41,000, all subsidies excluded.
You do know the same credit use to or still applies to the Prius. How do you think they became popular?
Wrong again. The Prius took advantage of a hybrid vehicle credit signed into law by Bush, which amounted to about $3,400 and expired last December. The Volt takes advantage of a plug-in electric tax credit, which was lobbied for by GM, of $7,500 for the purchase of the vehicle, $1,000 for purchase of the charging equipment (Yes, you need that too... tax credit can be up to $30,000 for businesses), and state subsidies which can be up to $5,000 in CA.
So ruling out variable state subsidies, the Volt is subsidized to the tune of about $8,500 in direct tax credits, while the Prius took advantage of less than half that.
Oh, I'm not done either. As part of the stimulus bill, GM took advantage of somewhere around $2.4 billion in subsidies, loans, and grants which were labeled as the "Advanced Vehicle Technology Grant Program". And by GM's own statements, they admit that unless significant further investments and advances are made in the field, the technology used in the Volt will not be commercially viable for a very long time.
So yeah, I have done my homework, and the results are pretty glaringly obvious. The Volt is an abject failure in all aspects. Proven technology already exists in current hybrids such as the Prius, or Ford Fusion. The Volt exists solely as a misguided, inept venture into government-mandated social change. It is nothing more than a drain on resources that makes some people feel "good" about themselves for being so progressive.
Bottom line, do your homework before lecturing others to do the same.