My 2007 Yukon monitors all of the fluids you mentioned. :D

Good find. If this film is available for large scale production, it may be available to the automotive industry. However, there may be some marketing or cost hurdles that keep it from production vehicles. If the market demand is too low or if the cost per unit is too high; it won’t be offered on vehicles.

Lots of modern cars monitor all of those levels.

How do you breath through it?

Limited production demand, probably <1% of vehicle purchases. Most people who could actually use this feature are better off buying on of those beacons you posted.

Several manufacturers already produce proximity sensors on their vehicles. Though I believe Tesla is the only one doing something similar to this for their future autonomous mode.

Difficulty here would be production expense for such a LARGE single piece LCD. However, you might be able to produce some film that acts like those transition eyeglasses that could adhere to the inside but that’s not going to be opaque.

My 2007 Yukon has an oil level sensor in addition to a pressure sensor and the dipstick (not to be confused with the driver).

Prohibitively expensive to produce in a “transparent panel” arrangement. The Ford Raptor does integrate a front camera for near-field terrain visibility.

My wife’s 2011 Mini has brake wear sensors and DIC warnings.

My 2007 Yukon does something similar. When the low-fuel indicator is on, the GPS asks if you’d like to see nearby gas stations.

Cellular signals these days are digital: “ON” or “OFF”. Most phones are updating information while not in use and their cellular activity is “ON”. So, unless you are the federal government (joking) you’re not going to be able to tell if the person behind you is sexting their secretary or getting GPS directions.

System failure causes windows to randomly explode.

I’m sure this is not what you want to hear, but I’m sure most of the suggestions you are going to receive are going to be ideas that have already been thought of and dismissed for a number of reasons primary amongst them would be cost while second is complexity of manufacturing, while third is probably that some ideas…

The Henry Ford has some Traction Engines if you’d like to see one in person.

Well, everyone has already listed my car(s) on this list. I’m going to just sit back and watch them appreciate in value.

I found a decent screwdriver in my Corvette. Broken glass in my Yukon. The Trans Am had some concrete, and a Merchant Marine newsletter. The Mini still has some of it’s ZipCar modules left under the dash. The Malibu had nothing, well a defective hybrid system doesn’t count does it?

As a T-top owner: they are fun, but over-hyped. If the sunroof isn’t enough for you, get the convertible.

Price? I need to know how many pennies to pinch.

You have described two opposite things, and stated the obvious fact that they are different. Congratulations.