Back in college days I was part of the operating crew at Muncie Dragway. When Indy was set to open for the first time all of us went to help the green crew that'd be running things there.
That first day, the 'draw' was the complete Mickey Thompson show---from a Super Stock Pontiac driven by Hayden Proffitt to MT's full run of fuel cars. He had the 2-cylinder car there as well as his AA Fuel set-up. Standing around early they fired-up the AA car and MT rapped it as is shown in the vid you've shown us here. MT claimed he tuned by listening to instantaneousness of the rap.
KS
