Dak Dak Dave and his classic VW rally car workin' the dirt at a Northern Districts Sporting Car Club (QLD AUSTRALIA) motorkhana.
http://www.ndscc.asn.au/
my 1993 dodge dakota after i put 1/2 a bottle of seafoam in the gas and 1/2 in the vacuum line.
not a great deal of smoke, but it was kind of cool lol.
i let it sit for 2 hours after puting it in and i think it may have been TOO long ...