The Big Wheel would rise and then nearly be killed by the drain-the-happiness shadow of corporate consensus. “Safety study shows Marx Big Wheel most stable tricycle design tested in U.S.A.,” read an ad that ran in the November 1973 edition of Family Circle. The result was a flood of Big Wheel look-alikes, including the EZ Riders Mighty Wheel and the Coleco Power Cycle. Keener had big plans, including an adult-sized Big Wheel. I remember when we bought our own son (he’s now 10, so this wasn’t that long ago) his first Big Wheel.