Is it possible for cars to travel on this road permanently or are there restrictions on it?

"no longer a post office. now a gym. "
The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2023-12-13T18:30:01Z
POI name: Leigh Post Office
POI types: public_transport-platform highway-bus_stop
#organicmaps ios

Incorrect postcode location of house, not part of Dinnington High School.
Correct postcode, S25 2SW, Manor Lane, Throapham.
Also this location is coming up as 3 Jesops Court which is 120 metres to the north

3 April 2024: Wheelhouse Park still appears marked erroneously as 'Beechwood Close' on lower zoom settings, and there remains no reference to its real name!

M&Co stores have all closed.

Unable to answer "Is there a waste basket at this stop?" – Trevone Turn (Bus Stop) – node/7685499452 via StreetComplete 59.2:

No bus stop present, there's only one on the other side of the road

Presumably the buildings here contain a number of individual shops. A ground survey to map them would be useful. #surveyme

This states fire station, this is not correct as its a little further down the road.

This states fire station which is not correct, it is a little further down the road.