When Step 2 discontinued their Choo Choo wagon, it became a cult item among parents of multiples, who would stalk resales and eBay in hopes of finding a used one. Now Step 2 has reissued the Choo Choo, and Radio Flyer debuted another wagon for three.
The Choo Choo is available with 2-3 cars, and Step 2 makes a trailer that can be added on for hauling additional kids or stuff. Radio Flyer's Triple Play Deluxe Wagon has triangular seating configuration and a rear storage bag for carrying extra stuff. Each Choo Choo car can hold up to 50 pounds, while the Triple Play can haul up to 200 pounds total.
Neither design is particularly attractive and we would much prefer a non-plastic option, but it's worth noting that wagon manufacturers are addressing the needs of larger families. These could be good options for families with several small kids who have aged out of their strollers but might still want to hitch a ride on longer outings.
(Images: as linked)