Should electric-car makers subsidize fast charging for owners?

Nissan Leaf electric car using DC fast-charging station at BP in Metrolina area of Charlotte, NCBy now, purchase incentives are a well-proven and valuable tool in increasing electric-car adoption. But what if incentives were applied to more than just the cars? Different automakers have shown varying levels of interest in developing DC fast-charging networks for the electric cars they produce, with Tesla leading the way with its Supercharger...