That's a great point Kevin.
The experience of John, Doug, Carl, and others is a good indication of the usefulness of the Model A today.
Jonathan Klinger of Hagerty did drive his 1930 Tudor for a whole year in Michigan. To be fair, Jonathan is well versed in auto mechanics, and Jonathan did have some major problems, and ended up swapping his motor. His blog is still up-
www.365daysofa.com
Back to your post, Kevin- If when the cars were new they were not capable of safe speeds over 45 MPH, that would mean there was something wrong and repairs would be necessary. These days, a 45 MPH car is considered "normal" by a lot of people, and like you, I disagree with that. My Tudor is safe at any speed right up to its redline, and it drives great. It has an "I can go anywhere, anytime" solid feel to it, unlike a lot of other Model A's I have driven. I'd have no hesitation of jumping in the Tudor right now and driving it across country. The only modifications to the Tudor is turn signals, and the extra brake light/turn signal light on the passenger's side to match the driver's side tail light. Totally stock motor, wheels, etc.
The main issue isn't the Model A itself, the main issue is the other traffic on the roads. Most drivers seem to drive their vehicles right to their design limits all the time. The race between stop lights is never ending. If you don't race also and keep the gap tight to the car in front of you, then other cars constantly dart in front of you to take that space and make an unsafe situation even worse.
For driving a Model A every day, I would say the very first modification to the car would need to be turn signals. In fact, I would even go so far as to say this would be mandatory. The extra brake light would be next on the list. Making sure your brakes are in top condition should be your primary mechanical concern. if your Model A cannot lock up all 4 wheels in a panic stop, then it's time to fix it BEFORE you use it as a daily driver.
I use the Tudor several times a week for non-work related trips and errands. I happen to live in a fairly rural area about 5 miles from a small town. That town is so small, it doesn't even have a single stop light. The Model A is ideal for this kind of thing. However, when I drive the 30+ miles to the nearest larger town with traffic, stop lights, etc., the Model A becomes a little less safe feeling.