Tesla is extending its referral program through the end of 2015

In late July, Tesla CEO Elon Musk announce that the company would start a referral program and run it through the end of October.

Calling the"Referral Program" - which was effectively and amusingly named on a conference call in late July in response to a journalist's question - "incredibly successful," Tesla announced on Thursday that it was extending it through the end of the year.

Tesla made a few modifications, however, explaining them in a statement:

While we will no longer be giving Tesla credits to you are the referrer, we have expanded the unique experiences we're making available to our top supporters.

• The person to reach the overall highest number of referrals per region will received a free Ludicrous P90D Model S, plus an all-expenses paid trip to Model 3 unveiling event with VIP access
• The first to ten referrals per region will receive a free Powerwall with installation
• Those making ten or more referrals will receive a VIP invitation to the Model 3 unveiling event
• Those making five or more referrals will receive a VIP invitation to Gigafactory opening event

According to Tesla, you need to be a current Tesla owner to participate in the referral program - an owner of a Model S or Roadster vehicle.

And new buyers will continue to receive a $1,000 discount on their new Tesla.