I tried searching the web, but it seems there is contradicting information on whether high automobile temps (I live in Phx, AZ) causes chemicals in those 12 oz/16 oz water bottles to leach into the water. I like carrying water bottles in the truck but don't wish to poison myself. I've noticed that some plastic bottles have very thin walls and other brands seem more durable. Is one brand safer than another? Are all brands going to be safe after a summer in Phoenix? I don't keep any in direct sunlight.

Thanks for your input,
Xavier