Answer:
The cans should move towards each other. This is due to Bernoulli's principle
that the air pressure will be reduced in the area between the cans. This is similar to lift on an airplane wing due to the faster moving air over the top of
the wing or the curving of a pitched baseball due to the rotation of the ball
causing greater air pressure on one side of the ball as compared to the air pressure on the other side of the ball.