How many lines of ABAP code are inside of SAP?

Quite tricky question but have you ever think how many lines of ABAP code is inside of SAP? How many years it could take to get it run everything? Normally such a questions make no sense. Jon Read writes in his blog what he heard in TechEd 2007. Vishal Sikka, SAP's chief technology officer was daring enough to tell there that there are still 238 million lines of ABAP code in SAP. I’m not sure if he counts only code in ECC (former R/3) or in NetWeaver or both but this number looks very impressive. All what can be added in here is that people who know ABAP are not going to loose their jobs soon.