obviously nonsense

The item below is obviously nonsense. HOW CAN A BI-DIRECTIONAL BICYCLE WORK WITHOUT BI-DIRECTIONAL WHEELS? Return it to the manufacturer and INSIST they provide bi-directional wheels!

Sight-seeing is way better when you can SEE BOTH WAYS! And think of it ~ if you both pedal in opposite directions, then you can travel IN TWO DIRECTIONS AT ONCE! How is this possible? Alternating gears, just like alternating current in electricity! Pops back and forth, one direction to the other, so quickly you hardly notice the change!