Development began in 1958 with XC9002, a scaled-down version of the 1956 Issigonis XC9001 prototype. However, this was soon thought to look too much like BMC’s new Mini.

While the BMC 1100 was an Issigonis concept from the outset, it took Italy’s Pininfarina to give the car its undeniable style:
More pictures on AROnline:
http://www.aronline.co.uk/blogs/conc...nd-prototypes/