Ok, its not ideal to use the Twizy on a motorway at all, but due to a road closure I ended up taking the motorway for 5 miles to the next junction. Being a Sunday it was not so busy, luckily, however what I noticed was the fact my range had increased and the driving eco bar was at max when I left the motorway.
I was flat out at the indicated 52 for the whole time, it wasn't down hill, but neither was there any inclines.
Twizy actually felt quicker today than ever before, not sure if that was down to the fact, last few days its been rather mild.
Anybody else every had this same range increase when flat out??