Comments by "Tony Wilson" (@tonywilson4713) on "No, Tesla Cybertruck Is *Not* Faster Than Porsche (While Towing)" video.

  1. Aerospace engineer here - loved it and despite seeing the issue with the second 1/2 of the quarter mile that you mention in the Edit #1 - I agree its a fair assumption. Your NOT trying to be exact your trying get a basic estimate that says YES or NO. Which is an damn important thing too many engineers NEVER Learn. Way to often I see or hear claims that it takes very little to disprove and Elon Musk provides many opportunities. Sorry if this is a bit longish but you'll get that what you've done is actually GOOD ENGINEERNG PRACTICE. My favorite example is terraforming Mars. Way back in 1987 when I was doing my final year we had a number of guest lecturers. One of those was an Alum who worked at NASA and had just completed a study into what it would take to terraform Mars. So we were damn keen to hear about it. His opening remark was (paraphrasing) "Sorry its impossible and here's why." The basic answer is that Mars like any plant is a damn big object and way bogger than we normally realise. He introduced us to 2 concepts. They didn't have labels back then so these days I call them Planetary Mechanics and Planetary Dynamics. Planetary Mechanics is just like what you've done here. You don't try for exact details you are just asking "what does this take?" Planetary Dynamics is all that stuff like making a water cycle work or an oxygen cycle work as well as keeping the planet within a suitable temperature range. Yeah that stuff we all know about but nobody knows how to actually do it. On basic planetary mechanics its sort of as simple as understanding the volume of a spere (v=pi*r^3). Even simpler is just to take the surface area of a planet and change km² to km³ because that's a very close approximation to the volume of a 1km thick layer around something as large as a planet. Mars with a surface area of 1.4437×108 km² which means a 1km thick layer is about 1.4437×108 km³ in volume. That volume with Earth standard air (sea level, pressure & density) is about 178 Trillion (with a 'T') tons. Despite Mars being a lot smaller than the Earth its still a planet and planets are big, damn big. So before we even try and think about water, oxygen, nitrogen and other cycles we'd need to figure out were we get the air from and its a lot of air. Sorry to bore you with my story but I really like this video and what you have actually shown. Its good engineering practice.
    2