None of it. NASCAR sponsors don't make cars.
This is completely up to the sponsor and the details outlined in the sponsors contract with the driver.
Partly from ticket sales, part from NASCAR's television deal, and some from sponsors.
They change sponsors because some companies do not want to be a part of it. Or they do not want to spend any more money.
A NASCAR driver makes more money than a soccer player. NASCAR drivers also make a lot of money from sponsors.
Currently, Jeff Gordon's primary sponsors are AARP's "Drive To End Hunger", Axalta Coating Systems and Pepsi.
Cumulatively some $20 million plus.
Only if Speed Racer sponsors a race.
pbr, mx, drag racing, nascar, gay pride parade
It depends on they're team and sponsors. They are contracted.
The U.S. Army no longer sponsors Ryan Newman. They left Nascar following the 2012 season.
Because his racing endeavors bring publicity to his sponsors, good and bad, and on balance it is beneficial to his sponsors.