Vintage car ad is a big testimonial

Chevy didn’t brag about the Vega. Instead, they let everyone else do it for them. This ad is basically a collage of glowing reviews from Motor Trend, Car Life, Road & Track, and more—all saying the Vega was amazing. It’s a textbook case of turning press coverage into marketing gold.

Why this works

• Leverages social proof from credible third parties
• Builds trust instantly using known publications
• Uses authority bias—borrowed prestige from experts
• Creates FOMO—everyone seems to love it, so you should too

Other times this move crushed

• Apple filled launch videos with reviewer quotes for the iPhone 14
• Tesla regularly uses customer tweets as mini-ads
• Nike highlights athlete testimonials instead of brand bragging
• Airbnb used journalist blurbs to build early credibility
• Rolex ads quote explorers and scientists praising performance