Yawn. I oversimplified for effect. Of course all the exterior panels are changed for the Roadster.
Was developing the Elise from the ground up (apart from its Toyota engine) a stupid business plan for Lotus?
I was responding to jester72's quote:
Tesla certainly couldn't do anything like that if they had to buy in a partially-completed car from another manufacturer and then just add their own drive technology and a body kit.
If they expect to become a credible auto manufacturer, they'll someday have to be able to develop a car. Otherwise, I think they'd be better off selling the electric drive technology as engineered "kits" to other car manufacturers.
As for range, Top Gear and some of the magazines "famously" got about 90 miles on a charge when driving it on the test track.