Hum, I think a free swivel wheel would only work for very cheap designs. If you&#x27;re not convinced, you can search for 3 wheels vehicles on google image [1]: none of the vehicles there have the 2 wheels + 1 free rotating wheel design that you recommend.<p><a href="https:&#x2F;&#x2F;www.google.com&#x2F;search?q=3wheels&amp;biw=1673&amp;bih=1124&amp;source=lnms&amp;tbm=isch&amp;sa=X&amp;ved=0ahUKEwiKz_yL-JfKAhVIJR4KHdy3AxwQ_AUIBygC" rel="nofollow">https:&#x2F;&#x2F;www.google.com&#x2F;search?q=3wheels&amp;biw=1673&amp;bih=1124&amp;so...</a><p>Edit: actually, some baby carts have it .. alright<p><a href="http:&#x2F;&#x2F;www.aliexpress.com&#x2F;store&#x2F;product&#x2F;EMS-Free-shipping-Good-Quality-Perambulator-Baby-Stroller-With-3Wheels&#x2F;711381_1538853521.html" rel="nofollow">http:&#x2F;&#x2F;www.aliexpress.com&#x2F;store&#x2F;product&#x2F;EMS-Free-shipping-Go...</a>