Staten Island here, I insured with Nationwide for about $750/6mos last July. That's with 100/300, full glass and $1000 deductibles. The premium just went up to $785 after 6 mos. Geico wanted over $1200 for a similar policy. The other quotes, closest to Nationwide were from Progressive and Liberty Mutual. Hope this helps.
One more thing, if you go with Nationwide and enroll into their SmartRide program, where they send you an OBDII device to monitor your driving, they give you 10% off most of the components that make up the premium. Since the OBDII port in the Tesla is not wired for anything but power, they are not able to snoop on your driving, but you do get to keep the discount for the life of the vehicle on the policy. Other insurers have similar offerings, like Progressive Snapshot, etc., but I'm not familiar with their terms.
Hope this helps.