The explosion was truly powerful, as it completely destroyed and combusted the car that Eric and Hilda were riding.
It was clear that the person who had set up the bomb and set it off was a true professional, as he had waited for the car to go over the bomb, and had activated it only when it reached the gas tank.
This way the explosion not only sent the car flying away, but it also caused the explosion of the gas tank, which added to the combustion and force.
Everything had been done in perfection so it was impossible for Eric, or Hilda to escape the explosion, both of them should be dead.
And even if they weren't at the beginning they would surely be once flames started spreading around the car.
There was no way someone could survive such an explosion and such a fire, this was the first thing that everyone thought.