First i posted fliers for a regular race across the city, 1st prize was 1000$
Then I told them to go to the Safehouse at the end of town where the race would begin.
I had hidden a rocket underneath
I hit ignition on the rocket, and the nose cone came out of the ground and sealed them all in
Then i shot them to the moon and said, Whoever can race from here to that crater 1 mile away will win 2 million dollars!
How did you know about that?