> Gordon Murray designs some pretty atypical vehicles
You don't say! One thing is for sure: he really, really, really loves the idea of a central driving position. All the cars you mentioned have the driver sit smack bang in the middle.
It's gotta be cheaper to make one car that can be driven on either side of the road than make a car for the UK and then another one for the rest of the world.
Not mention India (population 1.3 billion). All in all one third of the world drives on the left. I read somewhere that a lot of major manufacturers make about 50% of each.
https://news.ycombinator.com/item?id=12440612