People
Old elephants limp off to the hills to die; old Americans go out to the highway and drive themselves to death with huge cars.
— Hunter S. Thompson · Fear and Loathing in Las Vegas

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The passage sets two images of old age beside each other: elephants heading for the hills and Americans taking huge cars onto the highway. Both lead toward death. The bleak comparison makes driving look like a human version of that final journey, marked by conspicuous excess.
Context reviewed