Petrol vs. Hybrid Cars

Here is an interesting article on why hybrid cars are likely to remain behind petrol cars for some time to come:

http://www.economist.com/node/21541443

Two points come to mind:

1) Technology is an influence here; better automotive technology is changing the car industry by making cars more fuel efficient.

2) Government regulation on emissions is what, in some ways, has driven this technology to be developed.