What barriers? Autox you show up with a car that’s not a death trap (tires not corded, functioning seat belts and brakes). Loaner helmets and free instruction are available. $45.Time trials, autox and other sanctioned speed events are fun but the barriers to entry are more than many are willing to overcome.
On my bucket list is to take the Corvette on the Silver State Classic Challenge in Nevada, ~69 miles each way on open highway as fast as you dare (in your speed class).
I really wish the USA had something similar to the autobahn. There's no reason it couldn't be done in this country with all the open space. Require extra driving training and have a special endorsement (like the mc endorsement) on your license to drive it .
Silver State Classic Challenge Inc.
Silver State Classic Challenge, Inc is a non profit corporation, formed to promote open road events, provide events to legally drive extended distances at speeds challenging to both driver and vehicle, and to provide opportunities to learn how to safely handle your vehicle at speed, both in...www.sscc.us
Hpde is again a safe car, $300 and a helmet, sone orgs offer loaners and in car instruction.
The only “barriers” are in your head.