It's called "range anxiety".
For those who cannot surmount it there is always the hybrids which provide a small gas engine as a security blanket.
The value of Tesla's Supercharger network was proven when Tesla Version S owner John Glenn and also his little girl Jill had crossed the USA from New York City to Los Angeles without investing a dollar on 'filling up'. While they needed to reenergize 28 times throughout the 5823-kilometre-long journey, 'refuelling' had not cost them anything. Tesla Motors had placed the billing stations along the significant transport hallways, thereby boosting the movement of its consumers.