how Perry prevent Dick from throwing the hitchhiking boy and his grandpa out of the car

Perry prevented Dick from throwing the boys and his grandfather out of the car by stating that he'd be getting out with them.

"Frankly, I don't give a damn. You want to put them out? Then by all means." Perry looked at the invalid, still somnolent, dazed, deaf, and he looked at the boy, who returned his gaze calmly, not begging, not "asking for anything," and Perry remembered himself at that age, his own wanderings with an old man. "Go ahead. Put them out. But I'll be getting out, too."