This is probably a dumb question, but I'm a country girl. If you take a baby in a cab, do they just sit on your lap?

BFP#1 "Watermelon" born 3/2011
BFP#2 "Pumpkin" 7/14/12 ~ EDD 3/23/13 ~ Natural M/C 8/3/12 @ 7 weeks
BFP#3 "Pineapple" born 4/2013
BFP#4 "Grapefruit" EDD 3/29/16
Re: Babies and cabs
This. I mostly rode buses or subways with DD in NYC, even to and from the airport, to avoid the car seat issue. When I did need to go somewhere in a car, I tried to take the car seat and bring along my gogoKidz wheels so I could roll around the seat with me after exiting the car.
There are emergencies that have come up, having to get quickly from the doctor's office to a blood testing lab, for example, and I have taken those rides absolutely sick to my stomach and worrying that will be the one time I am in a cab accident. It's not worth the risk to me for just an average outing. Have you ever heard the expression "taxi face?" I know people who have been in some pretty nasty cab accidents.
For the infant stage I just used the bucket in cab. My stroller frame worked like a snap-n-go so it was easy.
I avoided cabs for the convertible stage but that is bc I live in Europe. If I were in the US, I would have gotten the Coccoro and a flash frame which essentially would work like the bucket and snap-n-go. Then after 3 yo you can use an RSTV.
Now that DD is 3 I use an RSTV in a cab.