This is a placeholder with links for anyone interested in Aiutocrossing their Lotus (or other car.)
https://www.rmsolo.org/schedule/
The SCCA runs a whole autocross series called SOLO. These are held either at PPIR or the Colorado Air and Space Port
Details for each event will be updated on their site as the events get closer and the site will include a registration link. So check back periodically on their site for the most up-to-date information.
Here’s a link with basic information on how to participate including safety, helmet requirements, etc.