Re: have you ever...
Absolutely not, in a no way in hell sort of way.
I've paid fare to install carseats in taxis while traveling, and walk over taking a bus. I buckled the kids in when going to garage sales -- even if we're only gonig a block.
That said my mom remembers putting me in a carrier on the front seat-- having to break suddenly and me falling to the floor of the car.... where I just laid there, still sleeping....