TRAVELING AND AIR RIFLE STORAGE

well gents summer is here ..the days are starting to get shorter ,,grrhhhh,,So the question is heat.. when going back and forth ,say to the range or a buddies house ..common sense tells ya keeping your gear at room temp is the way to go ,,but what do you guys do when going to the range and say bring 3 to 5 air rifles with you.. it seems to me ,that leaving any air rifle locked in a trunk or closed window car during summer is not the thing to do ,so what to due ,,is the question