GT roller coaster in Abu Dhabi sends two Ferrari F430 Spider carriages sprinting along twisting parallel tracks on a race to the finish line. [link].

Kidney stone sufferers who have had their deposits broken up by lithotripsy might also consider a roller-coaster ride to finish the job, they said.

Mainly control on viscosity, the depth of the roller and oven temperature, dry finish, souvenirs…, direct gilding , die-cutting.