"But S2 is not pure...
It has power steering, ABS, central locking"
No Elise has power steering. Only the 111R-onwards S2s have ABS (programmed to be as "driver orientated" as possible, i.e. minimal intrustion etc). Central locking is an option.
re. the blue Elan above. IIRC that's the original press car/development car/Colin Chapman's runabout. Pretty