by that time a small crowd of fascinated onlookers had formed outside lek 's cafe , some sitting astride motorcycles as if a quick getaway might be necessary they watched as a brown-skinned , rough-looking , bearded old 'farang ' was first attended to on the ground by a young man in a loose green shirt and white trousers and then put on a stretcher and loaded into the vehicle which then sped off , a red light flashing on its roof .