I believe the vehicle, which is generally viewed as the first car, was a big steam driven tricyle invented in the 18th century. Don't know the exact date.
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Originally Posted by Mr.T
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Originally Posted by digo
If im not wrong i know that ford invented the first car....
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Karl Benz built the first car powered by an internal combustion engine in 1885. 
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There were already cars with internal combustion engines running before that. Although I don't have a pic to prove it

Karl Benz was the first one to make it a commercial 'success'.
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Originally Posted by FordGTGuy
There are two basic types of piston-driven internal combustion engine in use today: the Otto-cycle engine (which is the normal engine we find in cars, and uses spark plugs) and the diesel engine, which does not use spark plugs.
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May I add something about petrol engines?
The first internal combustion engine 'on paper' was designed by Christian Huygens in 1673. But this one was never built and was designed to run on gunpowder.
The first built (2-stroke) internal combustion petrol engine was invented in 1858 by Etienne Lenoir, and commercialised and patented in 1860. The first types of this engine ran on coal gas, but were replaced in 1863 with a very primitive petroleum carburettor. In 1962 Lenoir mounted his engine on a 3-wheeled 'car' and drove from Paris to some little village with it. This Lenoir engine was extremely inefficient and the ignition system was pretty unreliable. So it was a big commercial failure.
Otto, a salesman in those days, learned about Lenoir's engine thought there could be done major improvements in this design. In 1861 he already patented a 2-stroke engine. And together with Langen he improved this engine further until somewhere around 1866. In 1876 Otto patented the 4-stroke petrol engine, until today known as the Otto cycle.
And Diesel invented the first diesel engine in 1893 and patented it in 1894. In 1897 he built a second model more improved model of the diesel engine. And that's the one that had a lot of success.