Refer Your Friends to Tesla, Get a Free Model X

There's nothing wrong with getting something extra because you're a loyal customer. Like when your favorite pizza place offers you a free slice after 10 orders. No complaints there.

But Tesla Motors is taking the loyalty program concept to the next level. Its ambitious new referral promotion will provide discounts, as well as the chance to win a brand-new Model X SUV, worth approximately $100,000.

Telsa will provide current car owners with referral links. If their friends buy a Tesla vehicle using that link, both parties get $1,000—easy as that. The owner gets the "cash" as a Tesla credit toward future purchases or service charges, and the purchaser gets $1,000 off the price of the car. A Tesla owner can earn up to 10 of these referrals, or $10,000 in credit.

But that's not the only incentive in Tesla's program.

"Just for fun, there will also be some things that money can't buy. If five of your friends order a Model S, you and a guest will receive an invitation to tour the Gigafactory in Nevada—the world's biggest factory by footprint—and attend the grand opening party," Musk said in a promotion email posted online by TheStreet.com. "This will be awesome. At ten orders, you get the right to purchase a Founder Series Model X, which is not available to the public, with all options free (value of about $25,000). The first person to reach ten will get the entire car for free."

So, anyone out there want to buy a Tesla? Make up your mind quickly, since the referral program ends Oct. 31.

In the email, Musk stressed that Tesla doesn't advertise or pay for endorsements. "If you see somebody famous driving a Model S, it is because they genuinely like the car," he wrote. "If you see it in a movie or TV show, it is because the people associated with that production genuinely like the car."

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Tesla stores, meanwhile, "are quite expensive to set up and operate. In reviewing the Tesla cost of sales, we found that it is approximately $2,000 to sell a car through our stores, higher in some regions and lower in others."

Some states have been fighting Tesla's efforts to sell directly to consumers rather than through dealerships.