Today we are looking at the 5 best defunct racing series in the world. Buckle up and join me in this emotional roller coaster.

5 - Superleague Formula

Years : 2008-2011

Engines :3.5L V12 - Spec

Notable drivers : Sébastien Bourdais, Ho-Pin Tung

4 - A1 Grand Prix

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Years : 2005-2010

Engines :4.5L V8 Ferrari - Spec

Notable drivers : Nico Hulkenberg, Ho-Pin Tung

3 - Speedcar Series

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Years : 2008-2009

Engines :6.0L Pushrod V8 - Spec

Notable drivers : Jean Alesi, Jacques Villeneuve, Heinz-Harald Frentzen, Johnny Herbert

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2 - German Formula 3 Championship

Years : 1950-2014

Engines :2,000 cc 4 cylinder engines

Notable drivers : Michael Schumacher, Nico Hulkenberg, Ho-Pin Tung

1 - SCCA Atlantic Formula

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Years : 1965-2011

Engines :Various 4 bangers over the years, notably Toyota, Cosworth and Mazda.

Notable drivers : James Hunt, Gilles Villeneuve, David Empringham, Memo Gidley