Why has no one yet invented....

[MyNameIsKenAdams]

A stroller / puschair base that is compatible with a toddler car seat / booster?

Especially an Isofix seat - surely its just an Isofix base on wheels?

I refuse to put dd in a taxi without a carseat so am either required to always use the car or the bus.

Surely this would be well used?

Have a look at the Orbit Baby stroller. What you want exists in the US under their brand. However, our car seat laws are different and I know this causes issues with them bringing them here.

I want one too. I don't drive and this would make life so much easier especially travelling. Can't find one in the uk though.