Above: Ted Marcus, head conductor and engineer, shares his love of model trains.

Ted Marcus, who recently tapered off his law practice to open Mammoth Car Wash in Peachtree Corners, has an action-packed “hobby cave” on the lower level of his house.

An avid collector of model trains, Marcus boasts of interlocking twists of train tracks that make Spaghetti Junction look tame. Also in his spare time, he’s a volunteer for the Sandy Springs police Citizens on Patrol unit.

Jaffe: OK, Ted, what’s with the trains? Your face lights up just like a child around them.

Marcus: True, one of my greatest pleasures is to run the trains for young children and seeing their reaction and amazed faces. When I left for high school, my mother gave away my train collection. Fast-forward to when my son Matt was 8; we acquired a new set, which we are saving for future grandchildren.

I have hundreds of train engines and train cars, mostly from the Norfolk Southern and Southern Railways lines. Some of my set is autobiographical. See the custom-made cars: Marcus and Sons Lumber, Ted’s Tires, Marietta Diner and favorite junk food: Twizzlers, Coke Zero and Doritos. On the other side of the wall, you see the model car carrier collection, which includes several Corvettes on railcars.

Jaffe: You also were one of the originators of the Kosher Kar Show (for classics) at Congregation Or Hadash, started three years ago, which has now grown to over 40 fabulous vehicles. Thus, you also have real Corvettes.

Marcus: I have two, one of which I drive every day. I belong to the Amazing Corvettes Club and attend car shows to display my 1982 Corvette. I call her “White Shark.” No name for the navy-blue one, but less than 2,000 were made with that color and oak top and interior. The blue one made the trip to the 50th anniversary of Corvettes in Nashville and also was on the 50th anniversary cruise with the National Corvette Museum.

Jaffe: I was blown away when you put oil into the model train to make smoke that smells like burning diesel fuel fill the air. It’s the icing on the cake.