3 ms·

Challenge is, can we make tired that don’t wear or are made of friendly materials.

• tialaramex 7y ago
  No. When things roll very tiny pieces break off both the rolling thing and the thing rolled over. If we want to travel by rolling (which seems like a yes) along the ground then that's going to produce PM 2.5 air pollution. Flying is definitely worse, for at least the medium term and perhaps forever, and magnetic levitation is so expensive you're just not going to do it at scale. The effect from pushing a stroller will be greatly (much more than linearly) smaller than from a goods delivery truck or a railway train, but it's there. We just have to consider this when deciding what's a good idea.
• dharmab 7y ago
  A tire that doesn't wear is a tire that rapidly overheats and loses grip.