It should be Mooresville - it's the center of NASCAR and not only home to The Pit but also
http://www.gopromotorplex.com/ which I found shared a video from JW that weekend of April 26th! That must be where they were.
Thanks for nailing this for us. Makes more sense than Morehead, NC where I saw nothing suggesting the same level as Mooresville NC facility (but could have missed).
A bit OT, but this is not a sport for the poor. From gopromotorplex^ link, for kart-owners:
"A
nnual Individual Membership: $1200/year. Annual Family Membership: $2000/year (up to 3 family members)".
"
Standard Garage Rental: SOLD OUT12' x 15' garage space
8' lockable roll-up door

Electricity and lighting included
Annual price is $2,500 - $2,750/year"
"Luxury Garage Rental: SOLD OUT12' x 20' garage space
8' lockable roll-up door
Electricity and lighting included
Added Amenities: Wall-mounted flat panel television with cable TV, workbench and exclusive access to the 'Luxury Lounge' (air conditioned private room for relaxing with TV, dining area, private bathroom and shower).
Annual price is $5,000 -
$5,500/year"
"
$60 for a Day Pass$30 for a Half-Day Pass (after 4 p.m.)
$45 for a Sunday Day Pass
*Rates for Day Passes are per driver, not per kart. If more than one driver plans to use the same kart, both drivers are required to pay for a practice pass."
Plus expense of kart, maintenance, insurance, transport from home to & from track, lodging, meals. Coaching fees?
Track time for practice, as ^. Driver gear (driver suits, helmets, gloves, etc), fuel. Race entry fees?
ETA: Almost forgot a trailer for the kart, too, to transport to races at other locations.
^ numbers show
serious financial commitment needed for kart racing. Could bring the
green eyed monster around.
JM2cts, could be all wrong.
Thanks pinkandgreenmom for post ref'ing to
Chuck E. Cheese w go-karts, which is what I h/bn thinking. This is a step up.