I do not think I could use my DS for ebooks to bright to much strain on the eyes I think, I might try it and see how it is on the eyes.
Hey it is plausible you would use your car for its air conditioning, hot summer day, home unit is broken, would rather sit in your car then sit and die in you blistering hot house, that is what this poll is showing too, 1 person voted for using as a media player (that one person in his car for the air conditioning) while every one else is using it to drive. (I was not the person sitting in his car btw)science said:This is like asking 'What do you mostly use your car for? Driving or air conditioning?'