ok - fair enough.
Given the long drive that I have already done, what effect is this going to have on the car itself.
Well, without actually knowing how you treated it after the initial 600 miles, it is difficult to say.
If you then started to cane the pants off it, then it is probably beyond any help for redemption. However, if you have continued to "baby" it, then I would personally start again, effectively ignoring those initial 600 miles, and start the running in procedure again. Use the "advanced search" function, using my username, and you should be able to find my own shedule.
Takig into account I lease it and in 2 1/2 to 3 years it will be gone (before warranty runs out)
Again, you may be lucky, and not encounter any problems at all. However, if I personally knew that a new car was not run in according to the manufacturers schedule, then I would walk away from buying it.
I've seen and experienced far too many knackered and worn engines in my time - if engines are correctly run in, correctly warmed up, and correctly maintained - then they will not suffer from adverse engine wear. In 99% of the time, a worn or knackerd engine is an "abused" engine.
