What Nascar owner has also owned a Formula 1 team?
Penske Racing entered the last to Grands Prix of the 1974 season
and continued in F1 through the end of the 1976 season. Mark
Donohue was the original driver. After his death in practice for
the Austrian GP in 1975, John Watson took over. It was always a one
car team. Watson scored Penske's only F1 win at the Austrian GP in
1976.
Vel Miletch entered 25 Nascar Grand National races (as they were
called in the pre-Winston and Nextel days) between 1956 and 1964.
His team scored 5 wins, all in West Coast races, with drivers
Parnelli Jones, Eddie Gray and Marvin Porter. Miletich had a long
association with Parnelli Jones, sponsoring him various types of
racing. When Parnelli retired as a driver, they formed Vel's
Parnelli Jones racing, which became one of the most successful
teams in USAC championship racing and F5000. In 1974, Vel's
Parnelli Jones Racing entered Formula 1 with Mario Andretti as its
driver. Like Penske, it did the last two races of '74, and all of
the 1975 season. The Parnelli showed promise initially but was
hampered when Firestone pulled out of F1 (the car had been designed
to run on Firestone tires) and when Viceroy (VPJ's sponsor in
American racing) decided not to sponsor the F1 team. The F1 team
was something of a sideline for VPJ Racing. Andretti was really the
driving force behind it. Without sponsorship and with little
success on the track (its best result was a 4th in the 1975 GP of
Sweden), the team folded after the second race of 1976.
Dan Gurney owned a Formula 1 team. He also drove in 16 Nascar
races, winning 5 of them. He did not own the cars he raced in
Nascar, though. His Nascar racers were owned by Holman-Moodyand the
Wood Bros. He also did one race each for Bill Stroppe, Petty Racing
and Rod Osterlund.