Ok. I'll theorize. Refrigerated truck is insulated against noise and won't allow them to overheat in very hot Mexico. If they're cold, wrapped in blankets, they'll stay still and quiet, huddled together for warmth.
Ok. I'll theorize. Refrigerated truck is insulated against noise and won't allow them to overheat in very hot Mexico. If they're cold, wrapped in blankets, they'll stay still and quiet, huddled together for warmth.