You can tell where the money is at by the transporter/support rigs in the pits---

Years ago(probably early 70s) at the NHRA Nationals at Indy we would take the truck/trailer to the hotel at night and work on the car in the parking lot--it was nothing to be running a fueler in the parking lot at 2 or 3 am after a rebuild!

Now--there are more support/hospitality trailers than race car haulers--