Now this is interesting! Suspension has been ruled by air and springs, but how about magnets?
German bike brand Canyon has produced a concept ebike using magnets in the pivot points. Obviously we don’t know how this affects rebound and compression, but the basic idea sounds good, and presumably they’d never need adjusting. Perhaps they would need to place different strength magnets in there for different weight riders?
Another idea is the miniature ‘Electric Engine’ built into the rear hub (not really a fan as crank motors rule! and are getting smaller all the time.
We’re never likely to see this bike of course, but the magnetic suspension definitely sounds feasible.