Jarno Trulli will make his test debut in a Sprint Cup NASCAR at Florida's New Smyrna Speedway on Wednesday.
On Tuesday, another familiar F1 name was at the wheel of the Michael Waltrip Racing Toyota Camry, and a report in the Orlando Sentinal said Mika Salo "caught on quickly".
After Juan Pablo Montoya made the switch in 2006, and Nelson Piquet Jr recently tested a racer of the lesser Truck Series, Red Horse Racing team owner Tom DeLoach said signing non-American drivers like Piquet "could open up a new market" in US stock car racing.
"There are 200 million people in Brazil on the east coast time zone, and Nelson there is like Dale (Earnhardt) Jr. here," DeLoach is quoted as saying by USA Today.
"Competing against F1 as a truck owner, I know I'm outmatched, but I think I could make it happen. F1 is in a lot of turmoil," he added.
