Around 20,000.
$200,000
They use the truck haulers to transport everything race to race.
In a Nascar Cup and Nationwide Series race there are 43 drivers. In a Nascar Truck Series race there are 36 starting drivers.
In order to race in the Nascar Cup, Nationwide or Camping World Truck Series, a driver must be 18 years old.
On March 30, 2014, Kurt Busch won the Nascar Cup Series race at Martinsville Speedway. The Cup race was then followed by the Nascar Truck Series race, which was won by Matt Crafton.
$20 million
It costs approximate $200,000 (minimum) to race a NASCAR Sprint Cup car in ONE RACE.
If you mean by professional, the highest level in Nascar, it is the Sprint Cup Series.In general, there are three top series in Nascar, the Sprint Cup, Nationwide and Camping World Truck Series.
On April 22, 2011, the Truck Series race in Nashville started at 8:00PM EST.
On average a NASCAR get 4-6mpg, so during a 500mile race they would consume 80-125gallons of fuel.
None of it. NASCAR sponsors don't make cars.