Complete the following sentence: The ACO was working closer with IMSA and Bill France Jr. of NASCAR and Daytona Speedway, to encourage inter-series racing. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Although the race clashed with a NASCAR race at Riverside two of the junior teams arrived.<unk> Although the race clashed with a NASCAR race at Riverside two of the junior teams arrived. Herschel McGriff<unk>raced with his son in their Dodge Charger, while Dick Brooks shared his Ford Torino with Dick Hutcherson (also a NASCAR-driver, and veteran from the
1966 race with Ford) and Marcel Mignot (a driving instructor at Le Mans circuit). ️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Current American Trans-Am champion John Greenwood had previously brought Corvettes over to race.<unk> Current American Trans-Am champion John Greenwood had previously brought Corvettes over to race. This year his IMSA-spec modified Corvette, nicknamed the <unk>Batmobile<unk> arrived.<unk>This year his IMSA-spec modified Corvette, nicknamed the <unk>Batmobile<unk> arrived. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ Michael Keyser bought one of the new Chevrolet Monzas modified by DeKon Engineering, built to take on Porsche in the IMSA series.<unk> Michael Keyser bought one of the new Chevrolet Monzas modified by DeKon Engineering, built to take on Porsche in the IMSA series. Tom Vaugh and Diego Febles also entered two of those IMSA-spec Porsches for the race. Tom Vaugh and Diego Febles also entered two of those IMSA-spec Porsches for the race.