I'll let somebody else take it. Any takers?
In 2002 Jeff Gordon did not win till the August race in Bristol. Then turned around and won again at Darlington the next weekend.
gonna guess...gas pumps.
Good guess but no.
Heres a hint ... Think about what modern era barrier was broken during the 76 season that precipatated the necessity for these.
Concrete walls not rails?
Infield care centers?
EAR PLUGS
FIRE HYDRANTS
No
This is something that can be found at your school, church, place of business etc etc but prior to 1977 they did not have them in the pits at NASCAR race tracks