Karl (Carl) Benz.
This question does not have a straightforward answer. The history of the automobile is very rich and dates back to the 15th century when Leonardo da vinci was creating designs and models for transport vehicles.
There are many different types of automobiles - steam, electric, and gasoline - as well as countless styles. Exactly who invented the automobile is a matter of opinion. If we had to give credit to one inventor, it would probably be Karl Benz from Germany. Many suggest that he created the first true automobile in 1885/1886.
Below is a table of some automobile firsts, compiled from information in Leonard Bruno's book Science and Technology Firsts (Detroit, c1997) and About.com's History of the Automobile.
SCAT - automobile - was created in 1906.
Puckridge - automobile - was created in 1904.
Alda - automobile - was created in 1912.
Artega Automobile was created in 2006.
Franklin - automobile - was created in 1902.
Geo - automobile - was created in 1989.
Bliss - automobile - was created in 1906.
Stearns - automobile - was created in 1898.
Envi - automobile - was created in 2007.
Vinci - automobile - was created in 2008.
Jewell - automobile - was created in 1905.
Lincoln - automobile - was created in 1917.