Car

Information
Cars are a very common transport for Humans on Earth during the 20th and 21st centuries. They are also called automobiles.

ATMOS
In 2009 Luke Rattigan created the ATMOS device which stopped a car producing C02. Cars around the world were all fitted with ATMOS, even goverment vehicles. Later The Doctor, Donna Noble and Martha Jones discover that ATMOS was being used by the Sontarans to convert the Earth into a cloning planet. The Doctor stops the atmosphere conversion and defeats the Sontarans. All Atmos devices are then removed from cars. (DW: The Sontaran Stratagem/The Poison Sky)

Advancements
In the far future cars such as the New Earth Car could hover.