because its cold
warm humid air rises and meets cold air leaving diffuser thus causing it to sweat.
put on ac in car and over heats
AC runs on the battery. If the car is off and you run the AC, then start the car, it will stall.
Only with considerable difficulty. You're probably better off to trade your car in for one with AC.
The AC is taking energy
No
The AC condenser would effect the performance of the AC system in the car.
XL=XC
your car ac will only blow hot air when there coolannt in the car is finished or the car is oveerheated.
whipped frosting
the ac in the car cools, the fact you have set a higher temperature than the ambient tempereature means that the car's heater is working and so is the ac, if you wish to heat up your car, turn the ac off.
The car seats because of the extra energy it needs for the AC compressor work