Are you really going to die? Or is someone just trying to sell you something?

The best-known examples of successful “growth hacks” — low-cost alternatives to traditional marketing — have been executed by tech companies. There’s the story of how Airbnb scraped Craigslist, the Dropbox referral program that went viral, and the classic example of Hotmail adding “Get your free email at Hotmail” tagline to the end of every email. (Ah! Simpler times when consumers would let you add spammy messages to the ends of their emails…)

While those are all fine examples, they teach would-be growth hackers, entrepreneurs, and marketers that growth hacking is something that only happens online. In contrast, I would argue some of the best growth hacks have nothing to do with the Internet.

Let me tell you about a brilliant growth hack executed by — of all things — my local Lexus dealership.

I’ve owned a Lexus for eight years. Every month since purchasing my car, I’ve received a glossy postcard with a picture of a shiny new Lexus and incentives meant to entice me into my local dealership for a test drive of their latest models. And every month I’ve tossed those postcards into the recycle bin without a second glance.

However, six months ago, I began receiving thick envelopes from Lexus with “URGENT SAFETY NOTICE” stamped on their fronts…