can you 3d print US quarter coins?

and successfully use them in vending machines?

or fucking parking meters

https://www.youtube.com/watch?v=0AkcWjB0UBE&t=23s

Horseless carriages propelled by gasoline might attain speeds of 14 or even 20 miles per hour. The menace to our people of vehicles of this type hurtling through our streets and along our roads and poisoning the atmosphere would call for prompt legislative action. The cost of producing gasoline is far beyond the financial capacity of private industry… In addition the development of this new power may displace the use of horses, which would wreck our agriculture.

heavier-than-air flying machines are impossible

>>4
Must be some shill for the horseshoe industry. Nobody really felt like that because they were quite literally drowning in horse shit before the automobile came along.

>>6
That sounds like a horrible way to die.

>>3
Well parking meters won't have this technology. Most of them are the same from the 60s.