I see that a team from ZeroCarbon World have just driven a Tesla 3 from Jon O'Groats to Land's End. 15h 46m overall, including 1h 31m 32s of charging. But sure, EVs are no good for long distances...
Certainly getting better. From Wiki:
On 22 May 2011, Kevin Sharpe and David Peilow completed the first end-to-end run from John o' Groats to Land's End in an electric car over two days, using only charging stations available to the general public, in a Tesla Roadster sports car.
On 7 October 2015, Jeff Allan and his son, Ben Cottam-Allan, beat the electric car record in a Tesla Model S completing the northbound route in 19 hours 45 minutes and the southbound route in 18 hours 53 minutes.
Google list the route as being 837 miles and taking 14 hours 40 minutes.
