This is from wormtech.com, a local car enthusiast group, having a lapping day at Gratten, all are welcome...the details:
Most of you already know about the open lapping day we are having on
July 24th. This email is being sent to every member on Wormtech.com to
get the word out. I've also cross-posted the event on a couple of
message boards. I hope more of you can join us.

Worm

Here are the details.

WormTech.com reserves the right to refuse any application. Cost for the
event is $155 per driver before July 21st. Between July 21st and July
24th the fee is $200. We will be at the track rain or shine. Make checks
payable to: Steve Dworman. Fee is refundable up to 3 days prior to the
event.

Please send your check to: Steve Dworman
30800 Telegraph Rd, Suite 2775.
Bingham Farms, MI 48025

Payment must accompany registration unless you mail a check. Questions?
Contact: Steve Dworman @ 248-767-9925 or worm@wormtech.com

Requirements
Helmet - SA90, M90 or newer. Minimum 3-point seat belts Long sleeve
cotton shirt, long cotton pants, leather or canvas shoes

Please Note
Vehicle preparation is the responsibility of the owner and each driver.
We will tech each vehicle between 8:30 and 9:00 am at Grattan prior to
the first session out.