The region has a very dense and easy-to-navigate road network.
The M2, M3, M4, M20, M23 and M40 motorways all connect the region, radiating around London from the M25 peripheral road.
With excellent public transport links, it is not necessary to have access to a car in the South East.
However, for ease of accessibility, especially when exploring the countryside, a car can be a very useful thing to have.
Many rural attractions are not served by public transport so driving is essential if you plan on visiting a lot of these.