tire

Factory-installed braces to secure them? Not so much.

"We had to repaint our house, and to do that we had to remove the stairs in the backyard. My dad whipped this up so we could still use the door."

From the submitter:

In the down & out, post apocalyptic city of East St. Louis Illinois, anything metallic that is not welded in place is fair game for scrappers, including man-hole covers. The city, being without the financial means to replace the missing covers, inserts used tires in their place to alert drivers of the open holes littering the streets.

No, wheely.

"Copy that, Bicycle, you're clear for takeoff on runway two-niner."

If your neighborhood BMX hills have a bit of a landmine problem, then go ahead and take this bike.

But is it airtight?

Are you trying to ford the river with your Ford? I think I got dysentery just from looking at this.

"I've got the most brilliant idea! Instead of people driving on wheels, why don't we just make the roads themselves out of tires! Brilliant!"