A Nascar Ad

Here is a Shell television advertisement with NASCAR driver Kevin Harvick speeding through suburbia in a street car, running on, presumably, Shell fuel.

Ethos: By showcasing Harvick, Shell establishes credibility. Harvick knows cars and what's good for them; he races them for a living. His presence tells people, "If it's good enough for this Daytona 500 winner, it's good enough for you."

Logos: At one point, Harvick turns to his lab coat-clad passenger and asks, "How'd the testing go?" The passenger makes Shell's appeal to logos, stating that cheaper gasolines leave behind engine gunk. This is support for Shell's claim that it is a superior gasoline.