The Viking Tandem Trike delivers a fun and efficient method of travel, powered by the teamwork of two human engines. Each rider can pedal independently, making for a comfortable and relaxing ride on this great looking car alternative. This amazing DIY Tandem Trike offers dual disc brakes, 15 speeds, under seat steering, and plenty of room for cargo capacity behind the rear seat. We design our plans so that anyone with a desire to build can make their own DIY trike for minimal cost.