Golden Gate Lotus Club PO Box 117303 Burlingame, CA 94011 USA http://www.gglotus.org/
Lotus Limited PO Box L College Park, MD USA http://www.lotuscarclub.org/
Lotus Seven Owners Club PO box 7 Cranliegh Surrey GU6 8YP United Kingdom http://www.gglotus.org/
I am a member of the first two and am a former member of the Lotus Seven Owners Club. Clubs provide information on the car, access to memebers that have done most of the things to their cars that you might contemplate. The clubs also provide access to race tracks, competition events, and shows. Some of the events are social and some are for excercising the cars.
Most of the clubs now have web sites where you can learn more about their functions.