It varies on where you race. IMCA allows drivers to be as young as 15 with a signed release from your parents. There are tracks that allow drivers who are much younger. Each racing association has their own set of rules. Independent tracks often allow for younger drivers then the large racing associations. Find race track websites to see what the rules are or go to some tracks near you and they will be happy to let you know what the rules are for that track. I have seen tracks in southern states that allow drivers as young as 13 to race 4 cylinder cars.
There is no such thing as a Stock race car. The fact that it is a race car means it is not stock. MPG depends on exactly what type of race car you are asking about. Suffice to say, none get good mileage.
It's bad to street race with any car.
Yes.
food is good
Yes
Race car for sure, there are more possibilities!
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The web address of the Historical Stock Car Race Group West Inc is: www.hscrs.com
NO
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Bladookie Changootown
Because true "stock" cars are too brittle to race.