Batman: There are two cars that leave the Gotham police department, one five seconds after the other, both traveling at approximately sixty miles an hour. The one in front has a trigger to a bomb carried in the second car. The cars are within half a city block of one another. What happens to both cars when that trigger is flipped? You want the answer?
The Riddler: I know the answer, Batman. Getting ahead of you by one city block is the answer. Then I can make you go boom.
From – Batman – Earth One Vol. 2