at first the opening behind him cast dim white light ahead and he could see yet more cars , jammed in bumper to bumper ( it must have been bad , dying in here , he thought , as claustrophobia wrapped its stealthy banana fingers lovingly around his head and began to first caress and then to squeeze his temples , it must have been really bad , it must have been fucking horrible ) , and the greenish-white tiles that dressed the upward-curving walls .