Had a ideer for a A/C system

Removing humidity out of a "conditioned space" (the inside of your car) will give you a certain amount of "feeling cooler" because, in general, hot dry air feels cooler than hot humid air. Your perspiration evaporates more readily in dry air.

You cannot effectively COOL a space until you get at least some of the moisture OUT of the air, because this humidity IS IN FACT "heat" in the air.

To put this another way, it is EASIER to cool a space full of DRY air than it is to cool a space full of HUMID air.