Tesla has also installed its own network of super-fast chargers along the East Coast corridor between Washington and Boston, as well as in California. It gives drivers in these areas the advantage of a 30 minute charge, instead of a six-hour overnight fill up at home.
Consumer Reports magazine said driving a Tesla S "is like crossing into a promising zero-emissions future. ... It's what Marty McFly might have brought back in place of his DeLorean in 'Back to the Future.'"
The Tesla far outscored competitors in its Luxury sedan category -- the gas-powered Porsche Panamera (84 points) and plug-in Karma (57) from financially troubled startup Fisker.
Shenhar said the Tesla's range, while leagues above its EV competitors, still has to ease the "range anxiety" for drivers used to going 400 to 500 miles on a tank of gas.
"You can't drive from here to Ohio and fill up anywhere you want in three minutes," he said from Consumer Reports test facility in Colchester, Conn.
The testers also noted that the Tesla doesn't have much of a track record yet for reliability or resale value. And while ordering a vehicle online may seem pretty cool -- bypassing pesky car salesmen at a dealership -- getting repairs, service and complex software updates to the EV's electronic brain can be a headache, at least according to posts made by owners on Tesla club blogs.