New Zealander Dixon was with wife Emma Davies-Dixon and Franchitti at a Taco Bell restaurant late on Sunday near the Indianapolis Motor Speedway, where hours earlier Dixon had clinched pole for the Indy 500.
Signs on the Taco Bell let customers know the security cameras are always rolling. Jalopnik could not find the cited report in a search of the department's online records base.
The police report said two males ran away after the robbery.
Dixon declined to comment on Monday (Tuesday NZ time).
Franchitti, now retired from racing, is a three-time Indy 500 victor and is currently working with the Chip Ganassi Racing team that Dixon drives for.
"Where I come from, it happens every day", Kanaan, who is Brazilian, said. "It's kinda scary. You would think that would never happen to us here".
While they were ordering, two teenagers approached them and held a gun to Mr. Dixon's head. Officers say they were just 14 and 15 years old. "It nearly took the pressure away when he did that so I just went out there and put my best 4 laps on the table and see what happens", Carpenter added.
"Scott Dixon and Dario Franchitti are completely fine after being held up last night by two men at a fast-food restaurant", the team said in a statement. Regarded as one of the all-time best Indy vehicle drivers, the New Zealander has won four series championships and 40 races - including the 2008 Indianapolis 500.
Former Indy pole-winner and three-time NASCAR champ Tony Stewart made no secret of his craving for burgers.
Franchitti, from Scotland, was a three-time Indy winner who retired in 2013 following a concussion and neck injuries suffered in a crash during the Grand Prix of Houston.
After only his eighth day on an oval, Alonso managed to put himself in contention for next weekend's race win with a chance to claim the second jewel in racing's triple crown from the middle of the second row.