Originally Posted by puffin
Originally Posted by indigo
Originally Posted by MumOfThree
... someone who physically can't push a trolley...

Use of the word trolley in this context is not typical "American" English...
Just out of curiousity what would an American say ...
That is a great question.

For the cultural differences in uses of the word "trolley", I believe the American expression in this context would be "cart" or "shopping cart". As in ... "someone physically unable to push a shopping cart."

To many Americans, a trolley is a mode of transportation. One might hear the terms trolley, trolley bus, trolley car, or cable car. Here is one of many possible links with pictures: http://www.cablecarclassics.com/

Often there may also be local differences in word usage. As an example: in some areas a carbonated soft drink is "soda", in other areas, "pop".

Hope this helps.