Cylinder Deactivation is something car companies are using right now to increase mpg numbers. Retrofit kits for older cars are also available. However, the cost of retrofitting an older car with cylinder deactivation may not pay for the savings in fuel. Did Crane get improvements from 20 to 42 even 60 miles per gallon? I don't doubt he saw improvements but I think there would have to be a lot of deactivation going on to get significant improvement in fuel economy, plus, turning off cylinders means losing power.
The reporter should have asked Crane about the impact on the car's horsepower, 0-60 time, etc. when using the device. Also, does using the Mileage Master void your warranty? Can you even use this device in modern cars?
The ABC report also talks with a guy running his car on used vegetable oil and Wright electric car but they don't get into too much detail about the problems, like taxes you have to pay on used oil.
[Source: ABC News]