Yes,None of this is new. In Texas you can not register kit cars, ie Dune Buggies. In Colorado military vehicles can only be registered as parade vehicles and must be completely stock in the military configuration they were originally built.
Switching diesel engines to natural gas is a simple solution. India did that 10 years ago in their cities with air pollution problems. Everything from semis to Tuk Tuks now run on natural gas. Of course 4 times the population in 1/3 the land area improves the logistics but the real issue is political will. Diesel is dead, investing in it mkes no sense.Montana have already stopped selling diesel to the public. While California still sellling. Due to which small business are bearing the effects.
NoIn Australia you cannot drive your LHD overlander. If you ship it to Australia it will sit on the dock til you ship it home. Nothing new LHD cars have been banned in Australia for at least 50 years. It'll eventually be common in North America too. Crazy to ignore the trend and buy anything with the driver sitting on the wrong side of the car.