i had the same thing happen when i transported two tubs of rats on a 150 mile trip.i only lost a few rats but when i checked the floor temp in my mini van with my temp gun it was 110 degrees.i now put down a 2" piece of styrofoam when transporting herps or rodents.i also put a thermometer probe with the animals and tape the unit to my dash.
good post jamie,could save someone from frying there herps.