Anyone recall them swamp coolers that were popular in the 50s for cars... They hung out your window and the force of the air entering them from driving was like the pump and the fan...

I bought one about 25 years ago at a yard sale that had been designed for an old Volkswagen bug and I had an old Volkswagen bug so...

... anyway, I bought it... Wasn't quite like air conditioning but on a 90 degree day you could keep the car in the high 70s witgh highway driving... Not bad...

B~