I edited some video of the Shanghai Maglev Train from a recent business trip to China. We covered the 40 km distance from downtown Shanghai to the airport in 8 minutes. Top speed 430 kph (267 mph).
It’s not directly related to cargo bicycles, but more so with hybrid commuting (using a bicycle locally and a train between cities). Imagine if a high density region like the US West Coast corridor (Seattle, Portland, San Francisco, LA, and San Diego) were connected with a high speed rail line like this.
It would definitely make hybrid commuting a more viable and enjoyable option. Plus imagine all the fun bicycle tours that become a realistic option. The rail lines wouldn’t have to be magnetic.
But wouldn’t that be cool?