Re: 80mile range?
"I could spring several hundred pounds (net of government grant) for a 'fast' charger that delivers 16A (4 kW), but that still takes 3½ hrs from 'empty' and you can't do much better than that from a standard domestic supply."
From the Tesla web site, they have 3 home charging options: 40A @ 240V (9600KW), 48A @ 240V (11520KW), 72A @ 240V (17280KW). Refill of 300mile range is "5:47" with the 72A charging.
Perhaps you need to raise your standards for your domestic electrical infrastructure?