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					Originally Posted by  Deskisamess
					 
				 
				Even in moderate temperatures a closed car can get extremely hot. 70 degrees on a sunny day can elevate temps in a car to over 100 degrees in just 30 minutes. We get huge swings of temperature here in northeast Ohio.  I doubt there is a reader that could survive it. 
			
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 I'm sure that many people leave Sat Navs in cars in precisely such conditions, and they survive it just fine. I don't think electronic devices are as fragile as you're suggesting!