Something Detroit Does Well
The city of Detroit has always affected the nature of the cars that the domestic automakers produce. In European cities streets are narrow and go in all directions, so small cars, handling and cornering were important. Detroit's streets are broad and for the most part on a 90 degree grid, so suspensions were calibrated more for comfort than precision handling and the cars were large boulevard cruisers.
Likewise with HVAC. Every year when the NAIAS rolls around people question the wisdom of holding a big auto show in Detroit in January. It gets cold in Detroit. Real cold. Maybe not Fargo or International Falls cold, but cold enough to evoke mention of brass monkeys' balls, witches' tits and well diggers' asses. Single digit Fahrenheit temperatures are not uncommon and subzero temps can happen any winter. The coldest it's ever been that I recall is 20 below and in the 1990s, there was a four day period when the air temperature never got above zero.
From the perspective of a Detroit automobile executive in the 1960s, it's understandable how the Volkswagen Beetle could have been dismissed. Even a pristine Beetle back then had inadequate heat. There was no electric blower on the heating system, just the engine cooling fan. Pressurized air was ducted off of the cooling shroud into the headers/heat exchangers. Heat, then, was speed sensitive under the best of circumstances. After a Michigan winter or two, with the salt on the roads, the heat exchangers and heat ducts were perforated with rust. Small wonder that VW offered a gas heater, a self contained 18,000 btu gasoline fired furnace.
Those same Detroit auto execs and their contemporary counterparts may have had access to company motor pool cars so they never experienced the joy of dealer service managers and warranty work, but they still had to deal with Michigan weather on the way to and from work. Like I said, it gets cold in Detroit and the auto execs don't like to be cold. Neither do engineers. At the same time while Detroit's not in the desert, in the summer it gets real hot, with temps sometimes reaching the high 90s, now and then up to 100 degrees. There are places in the United States that get colder than Detroit, there are places that get hotter, but there are few places outside of the Great Lakes region that have as wide a temperature swing. Staying comfortable was a Detroit imperative. It was also a way to make more money on a car. Heaters were extra cost optional equipment into the 1960s.
Also by the 1960s the domestic automakers were improving the ventilation systems. Cars had air vents in the fender wells, with cable actuators on the kick panel. Flow through ventilation integrated into the heating system followed. In the 1960s, air conditioning became a factory option on popularly priced cars, though some folks went with aftermarket units that hung under the dash. What was introduced by Packard in 1939 as an ultimate luxury item ultimately became standard equipment.
My dad, may he rest in peace, loved air conditioning. In the summer he'd keep the house at 68 degrees. American Motors used to label the maximum A/C setting as "Desert Cool". They must have had my dad in mind. Though he liked his options, as far as A/C was concerned, they could have had a single setting: max cool, max fan. In the 1970s he switched from Oldsmobiles to Mercurys and you could have cooled your drink on the dashboard of his 1974 Grand Marquis.
As Jonny pointed out, Detroit still is pretty much the standard when it comes to keep you comfortable in an automobile, temperature wise. I've never driven a Detroit product that couldn't blast full heat in subzero weather, or that couldn't keep you comfortable on a blistering hot summer day. Just about every automaker in the world now makes fairly sophisticated climate control systems but I think that's a case of meeting a high standard that Detroit has set.
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