Darwin award finalist.
This guy just suffered from sheer bad luck. That car could have landed anywhere, his girlfriend was in the car (thus that part of his plan worked), and he was running away. Fate just saw things different and decided to snuff the perp out.
Did he deserve it? Yes! He is a perp who tried to kill his girlfriend. However, his death shouldn't technically be filed under Darwin. A more appropos cause for his death would be Murphy's Law.
$h!t just decided to happen to him that day, and it sure took him out!