Ludicrous mode question

[irvineboy]

I read that for new owners this is a $10,000 option but for existing owners this is a $5000 option. Can't you save money by buying it without and then adding it afterwards to save $5000?

 

[Gizmotoy]

I read that for new owners this is a $10,000 option but for existing owners this is a $5000 option. Can't you save money by buying it without and then adding it afterwards to save $5000?

* Existing owners at the time Ludicrous Mode was announced.

 

[siucity]

Tesla — LUDICROUS MODE ONLY (P85D) - PRE ORDER DEPOSIT

The LUDICROUS speed option will only be available as a retrofit to customers who placed a P85D Model S order through Tesla before 11am PST Friday, 7/17/2015.