All small stuff (the bickering in the article) on the road to implementation. If they can get these cars to charge nearly as quickly as it is to pump gas, and limit the excess drain during power-hogging parts of a drive, these cars have a shot.
The trouble is still that they use a huge amount of resource and the amount of shipping required for parts takes out a huge chunk of the energy savings (if any yet). If proven viable, these costs will subside as more facilities are constructed globally to manufacture the batteries/automobiles.
The next 5 - 10 years will be interesting in this field.