The Double Loop Dare stunt produced by Hot Wheels double dared two stunt professionals to race Hot Wheels inspired cars up to 53 mph through a “double loop”. Once, through the double loop, drivers jumped to a 21 ft high landing ramp and skidded to a stop.

Schaefer provided a structural review of the double loop, ramps, and run-up to the loop. The double loop, 66 ft tall with a 60 ft inside diameter, weighed over 230,000 lbs and is made almost entirely out of welded A36 steel plate. The ramps and run-up are comprised mostly of scaffolding covered with plywood deck.

The Double Loop Dare broke the Guinness World Record for driving the largest loop in a car. The event was broadcast live by ABC from the X Games.